MIDDLETOWN, Calif. — The Middletown Area Town Hall will meet this week to get a fire season update and discuss other projects.
MATH will meet at 7 p.m. Thursday, Sept.14, in the Middletown Community Meeting Room/Library at 21256 Washington St., Middletown. The meeting is open to the public.
To join the meeting via Zoom click on this link; the meeting ID is 832 1989 2440. Call in at 669-900-6833.
On this week’s agenda are guest speakers from South Lake County and Cal Fire on the 2023 fire season update, and a presentation on the Middletown Garden Project.
There also will be a continued discussion about forming a MATH committee regarding projects, and an update from District 1 Supervisor Moke Simon regarding advance notice of projects.
MATH’s next meeting will take place on Oct. 12. At that meeting, they will start accepting annual nominations for the MATH Board.
The MATH Board includes Chair Monica Rosenthal, Vice Chair Todd Fiora, Secretary Ken Gonzalez, Rosemary Córdova and Bill Waite, and alternates Julia Bono and Tom Darms.
MATH — established by resolution of the Lake County Board of Supervisors on Dec. 12, 2006 — is a municipal advisory council serving the residents of Anderson Springs, Cobb, Coyote Valley (including Hidden Valley Lake), Long Valley and Middletown.
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Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it.. Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.
LAKEPORT, Calif. — The Lakeport Economic Development Advisory Committee will meet this week to discuss upcoming programs and get project updates.
The committee, or LEDAC, will meet via Zoom from 7:30 to 9 a.m. Wednesday, Sept. 13, in the council chambers at Lakeport City Hall, 225 Park St.
The meeting is open to the public.
Chair Wilda Shock said there will be three short information presentations, planning for the Business Walk program this fall, and updates on LEDAC and city projects.
Police Chief Brad Rasmussen will discuss the homelessness and mental illness town hall later this month and National Night Out.
Nicole Flora, executive director of the Lake County Economic Development Corp., will discuss the comprehensive economic development strategy.
Benjamin Rickelman, Lake County’s deputy county administrative officer on economic development will offer broadband and economic development updates.
LEDAC’s next meeting will be Nov. 8.
LEDAC advocates for a strong and positive Lakeport business community and acts as a conduit between the city and the community for communicating the goals, activities and progress of Lakeport’s economic and business programs.
Members are Chair Wilda Shock, Vice Chair Denise Combs and Secretary JoAnn Saccato, along with Bonnie Darling, Jeff Davis, Candy De Los Santos, Bill Eaton, Monica Flores, Pam Harpster, Laura McAndrews Sammel, Bob Santana and Tim Stephens. City staff who are members include City Manager Kevin Ingram and Community Development Department representatives.
Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it.. Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.
Graphs of yearly global surface temperature compared to the 1991-2020 average for each year from 1900 to 2022, from 6 data records, overlaid on a GOES-16 satellite image from September 22, 2022. Image credit: NOAA Climate.gov. Greenhouse gas concentrations, global sea level and ocean heat content reached record highs in 2022, according to the 33rd annual State of the Climate report.
The international annual review of the world’s climate, led by scientists from NOAA’s National Centers for Environmental Information, or NCEI, and published by the Bulletin of the American Meteorological Society, or AMS, is based on contributions from more than 570 scientists in over 60 countries.
It provides the most comprehensive update on Earth’s climate indicators, notable weather events and other data collected by environmental monitoring stations and instruments located on land, water, ice and in space.
“This report is a truly international effort to more fully understand climate conditions around the globe and our capacity to observe them,” said NCEI Director Derek Arndt. “It is like an annual physical of the Earth system, and it serves present and future generations by documenting and sharing data that indicate increasingly extreme and changing conditions in our warming world.”
“People are causing the largest known change in global climate since our transition to agriculture thousands of years ago,” said Paul Higgins, associate executive director of the American Meteorological Society. “The State of the Climate in 2022 report — an ongoing collaboration between NOAA and AMS — helps us understand the climate system, the impact people are having on climate and the potential consequences. The report can help inform the decisions needed to enable humanity and all life to thrive for generations to come.”
Notable findings from the international report include:
• Earth’s greenhouse gas concentrations were the highest on record. Carbon dioxide, methane and nitrous oxide — Earth’s major atmospheric greenhouse gases — once again reached record high concentrations in 2022. The global annual average atmospheric carbon dioxide concentration was 417.1 parts per million (ppm). This was 50% greater than the pre-industrial level, 2.4 ppm greater than the 2021 amount, and the highest measured amount in the modern observational records as well as in paleoclimatic records dating back as far as 800,000 years. The annual atmospheric methane concentration also reached a record high, which was a 165% increase compared to its pre-industrial level and an increase of about 14 parts per billion (ppb) from 2021. The annual increase of 1.3 ppb for nitrous oxide in 2022, which was similar to the high growth rates in 2020 and 2021, was higher than the average increase during 2010–2019 (1.0 ± 0.2 ppb), and suggests increased nitrous oxide emissions in recent years.
• Warming trends continued across the globe. A range of scientific analyses indicate that the annual global surface temperature was 0.45 to 0.54 of a degree F (0.25 to 0.30 of a degree C) above the 1991–2020 average. This places 2022 among the six warmest years since records began in the mid-to-late 1800s. Even though the year ranked among the six warmest years on record, the presence of La Nina in the Pacific Ocean had a cooling effect on the 2022 global temperatures in comparison to years characterized by El Nino or neutral El Nino–Southern Oscillation (ENSO) conditions.
Nonetheless, 2022 was the warmest La Nina year on record, surpassing the previous record set in 2021. With the re-emergence of El Nino in 2023, globally-averaged temperatures this year are expected to exceed those observed in 2022. All six major global temperature datasets used for analysis in the report agree that the last eight years (2015–2022) were the eighth warmest on record. The annual global mean surface temperature has increased at an average rate of 0.14 to 0.16 of a degree F (0.08 to 0.09 of a degree C) per decade since 1880, and at a rate more than twice as high since 1981.
• Ocean heat and global sea level were the highest on record. Over the past half-century, the ocean has stored more than 90% of the excess energy trapped in Earth’s system by greenhouse gases and other factors. The global ocean heat content, measured from the ocean’s surface to a depth of 2,000 meters (approximately 6,561 ft), continued to increase and reached new record highs in 2022. Global mean sea level was record high for the 11th-consecutive year, reaching about 101.2 mm (4.0 inches) above the 1993 average when satellite altimetry measurements began.
• La Nina conditions moderated sea surface temperatures. La Nina conditions in the equatorial Pacific Ocean that began in mid-2020, with a short break in 2021, continued through all of 2022. The three consecutive years of La Nina conditions — an unusual “triple-dip” — had widespread effects on the ocean and climate in 2022. The mean annual global sea-surface temperature in 2022 equaled 2018 as sixth-highest on record, but was lower than both 2019 and 2020 due in part to the long-lasting La Nina. Approximately 58% of the ocean surface experienced at least one marine heatwave in 2022, which is defined as sea-surface temperatures in the warmest 10% of all recorded data in a particular location for at least five days.
• Heatwaves shattered temperature records across the planet. In July, a 14-day heatwave swept through western Europe. A weather station in England recorded a temperature of 104 degrees F (40 degrees C) for the first time ever, over 100 stations in France broke all-time temperature records and stations in at least six other European countries set all-time heat records. The extreme high summer temperatures over Europe resulted in unprecedented melting of glaciers in the Alps, with over 6% of their volume — a record loss — lost in Switzerland in 2022 alone. Record-breaking summer heat in central and eastern Asia, particularly in the Yangtze River basin, led to a devastating drought that affected more than 38 million people and caused a direct economic loss of $4.75 billion U.S. dollars.
• The Arctic was warm and wet. The Arctic had its fifth-warmest year in the 123-year record. 2022 marked the ninth-consecutive year that Arctic temperature anomalies were higher than the global mean anomalies, providing more evidence of the process known as Arctic amplification, when physical processes cause the Arctic to warm more quickly than the rest of the planet. The seasonal Arctic minimum sea-ice extent, typically reached in September, was the 11th-smallest in the 43-year record. The amount of multiyear ice — ice that survives at least one summer melt season — remaining in the Arctic continued to decline. Since 2012, the Arctic has been nearly devoid of ice that is more than four years old. Annual average Arctic precipitation for 2022 was the third-highest total since 1950, and three seasons (winter, summer and autumn) ranked among the 10 wettest for their respective season.
• Although tropical cyclone activity was near average, storms brought devastation to many areas across the globe. There were 85 named tropical storms during the Northern and Southern Hemisphere storm seasons last year, which was near the 1991–2020 average of 87. Three tropical cyclones reached Category 5 intensity on the Saffir–Simpson Hurricane Wind Scale, which was the fewest Category 5 storms globally since 2017. The accumulated cyclone energy for the globe was the lowest since reliable records began in 1981. Despite this, several storms caused massive damage. In the North Atlantic, Hurricane Fiona became the most intense and most destructive tropical or post-tropical cyclone in Atlantic Canada’s history. Hurricane Ian, a major hurricane, killed more than 100 people and became the third costliest disaster in the U.S., with damage estimated at $113 billion U.S. dollars. In the South Indian Ocean, Tropical Cyclone Batsirai dropped 2,044 mm of rain at Commerson Crater in Réunion. The storm also led to 121 fatalities in Madagascar.
The State of the Climate report is a peer-reviewed series published annually as a special supplement to the Bulletin of the American Meteorological Society. The journal makes the full report openly available online. NCEI’s high-level overview report is also available online.
A measure prohibiting California State University campuses from using Native American remains and cultural artifacts for teaching or research cleared the Senate Education Committee on Monday on a 5-0 vote.
The bill also requires the CSU system to follow recommendations from the State Auditor — and to obey state and federal laws — by repatriating remains and sacred artifacts to appropriate tribes.
AB 389, by Assemblymember James C. Ramos (D-San Bernardino), was amended in the Senate following a scathing report released on June 29 by the state auditor revealing the CSU system had almost 700,000 human remains and cultural objects in its possession despite a 1995 federal and state deadline to return the remains and artifacts to the proper tribes.
Some campuses have not completed their inventories so even more collections are expected to be found. Ramos requested the audit last year and initiated a joint oversight and informational hearing to review the findings in late August.
Only about 6% of collections have been returned as required by the 1990 federal Native American Graves Protection and Repatriation Act, or NAGPRA, and its 2001 California counterpart, CalNAGPRA.
“AB 389 will ensure that decades after a federal and state requirement to repatriate the remains of our ancestors, CSU takes this responsibility seriously,” Ramos said. “These bones are the remains of our families and deserve respectful reburial. It is a fundamental human right to be buried according to the customs of one’s people. I know of no other group denied this right.”
San Manuel Band of Mission Indians Vice Chairman Johnny Hernández, who testified in support of the proposal, said, “The fact that little to no progress has been made in repatriating items that are of historical and cultural significance to tribes is appalling and unacceptable.”
Hernández added, “It is imperative that tribes be consulted in order to provide an understanding of how items should be repatriated and to keep the CSUs accountable throughout the process.”
Chairperson Janet K. Bill of the Picayune Rancheria of the Chukchansi Indians commented on the process at CSU Fresno.
She noted that while that campus has completed its review, “We must highlight that they did not consult with tribes before reviewing its collection which is mandated under the 2020 Amendment to CalNAGPRA. This failure to consult denied us the opportunity to opine on the respectful treatment of our artifacts, hindered our ability to share our tribal knowledge and traditions, and undermined our tribal sovereignty.”
Key recommendations from the audit report covered in AB 389 are:
• Monitoring campus efforts to review their collections and require completion by Dec. 31, 2025. • Ensuring that campuses have protocols regarding handling and identifying remains and cultural items. • Issuing a systemwide NAGPRA policy establishing consistent repatriation processes and training requirements. • Requiring campuses with more than 100 sets of remains or cultural items to have full time experienced repatriation coordinators.
AB 389 is sponsored by the San Manuel Band of Mission Indians, Picayune Rancheria of the Chukchansi Indians, Redding Rancheria, Shingle Springs Band of Miwok Indians and the Tachi Yokut Tribe.
Also supporting the bill are the Cahuilla Band of Indians, Enterprise Rancheria, Morongo Band of Mission Indians, Pala Band of Mission Indians, Santa Ynez Band of Chumash Indians, Soboba Band of Luiseno Indians, Tule River Tribe, Wilton Rancheria, the Yurok Tribe, California Indian Legal Services, California Indian Nations College, California Faculty Association, California Native Vote Project, California State University’s Office of the Chancellor, Generation Up, Indigenous Justice and the International Indian Treaty Council.
LAKE COUNTY, Calif. — Lake County Animal Care and Control has a young cat and several kittens ready for new homes this week.
Call Lake County Animal Care and Control at 707-263-0278 or visit the shelter online for information on visiting or adopting.
The following cats at the shelter have been cleared for adoption.
This cute 2-year-old female brown tabby is in kennel No. A4, ID No. LCAC-A-5491. Photo courtesy of Lake County Animal Care and Control. Female brown tabby
This cute 2-year-old female brown tabby has green eyes and a short coat.
She is in kennel No. A4, ID No. LCAC-A-5491.
“Star” is a 2-month-old female domestic shorthair with a tuxedo coat in kennel No. A26c, ID No. LCAC-A-5580. Photo courtesy of Lake County Animal Care and Control.‘Star’
“Star” is a 2-month-old female domestic shorthair with a tuxedo coat.
She is in kennel No. A26c, ID No. LCAC-A-5580.
“Ranger” is a 3-month-old male Siamese kitten in kennel No. A96a, ID No. LCAC-A-5392. Photo courtesy of Lake County Animal Care and Control.‘Ranger’
“Ranger” is a 3-month-old male Siamese kitten with blue eyes and a short coat.
He is in kennel No. A96a, ID No. LCAC-A-5392.
This 5-month-old female domestic shorthair cat is in kennel No. A#96b, ID No. LCAC-A-5464. Photo courtesy of Lake County Animal Care and Control.
Domestic shorthair kitten
This 5-month-old female domestic shorthair cat has a gray tabby coat.
She is in kennel No. A#96b, ID No. LCAC-A-5464.
This 3-month-old female domestic shorthair cat is in kennel No. A96c, ID No. LCAC-A-5641. Photo courtesy of Lake County Animal Care and Control.
Female shorthair kitten
This 3-month-old female domestic shorthair cat has a gray coat.
She is in kennel No. A96c, ID No. LCAC-A-5641.
Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it.. Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.
Naomi Cahn, University of Virginia; Bridget J. Crawford, Pace University , and Emily Gold Waldman, Pace University
While she was interviewing Jennifer Aniston and Adam Sandler in March 2023, Drew Barrymore suddenly exclaimed: “I’m so hot … I think I’m having my first hot flash!”
She took off her blazer and fanned herself dramatically.
While most hot flashes aren’t televised, the entertainer’s experience was far from unique. Barrymore, age 48, is one of approximately 15 million U.S. women from 45 to 60 who work full time and may experience menopausal symptoms.
Unlike Barrymore, most women are silent about their menopausal symptoms. Yet their symptoms, even when concealed from employers and co-workers, are a burden on them, their workplaces and on the overall U.S. economy. Lost work productivity due to menopausal symptoms – measured by missed work hours, job losses and early retirement – add up to about $1.8 billion annually, the Mayo Clinic estimates.
In the lead-up to menopause, which typically begins between the ages of 45 and 55, levels of reproductive hormones change, and menstrual cycles become irregular and then eventually cease. This transition, called perimenopause, typically lasts for seven years.
Employees who experience menopausal symptoms are often reluctant to talk about them at all, let alone tell their bosses. They may feel stigma and shame, and they may worry that it could hurt their chances for a promotion, their co-workers will see them as less capable or that their status at work will be otherwise jeopardized. These concerns are not unfounded.
In a series of studies, researchers asked workers and college students to describe their initial impressions of potential co-workers, including “a menopausal woman.” The participants described her as “less confident and less emotionally stable” than the non-menopausal women.
No legal protections
Employees who do speak up and seek accommodations for their menopausal symptoms, which might include dress code adjustments to deal with hot flashes, are often out of luck.
No federal law requires employers to accommodate menopausal symptoms.
That’s what happened to Georgia Sipple, a food product demonstrator who had a doctor’s note requesting permission to break a dress code by wearing short sleeves on the job. When Crossmark, her employer, refused, Sipple felt that she had no choice but to quit. She sued the company, but the Eastern District of California federal court dismissed her case.
Sometimes, employees even get punished for their menopausal symptoms or status.
Employees have far fewer legal protections for menopause today than for pregnancy and breastfeeding.
Congress first directly addressed pregnancy discrimination in the workplace in 1978 with the Pregnancy Discrimination Act. That law made it clear that pregnancy discrimination is a form of sex discrimination. This means that an employee who was fired because her water broke and she went into labor at work would, unlike Coleman, have a winning sex discrimination claim.
Congress also passed the Pregnant Workers Fairness Act in December 2022, which goes into effect on June 27, 2023. That law requires reasonable accommodations for pregnancy, childbirth and related medical conditions unless doing so would impose an undue hardship on employers.
In our view, pregnancy and breastfeeding offer a potential model for protecting workers from menopause-related discrimination and providing reasonable accommodations. Until Congress is ready to pass such legislation, there are other possibilities.
These guidelines can be modeled on practices in the United Kingdom, where many business have adopted menopause policies. Climate-controlled break spaces, dress codes that incorporate short-sleeve options and breathable fabrics, dedicated menopause support and the like can all make a positive difference. The Equal Employment Opportunity Commission could also issue guidance highlighting menopause-based discrimination as a form of sex or age discrimination.
Additionally, even if the commission does not act, companies can adopt these kinds of policies on their own. That is already starting to happen, as U.S. businesses like the tech company Nvidia and the drugmaker Bristol Myers Squibb begin to establish some accommodations for menopause, including help with finding treatments.
To be sure, it can be risky to discuss symptoms at work, as this can undercut perceptions about women’s competence at work.
Given these symptoms’ prevalence, though, and the millions of workers experiencing them, we believe that breaking the silence can challenge and dispel these stereotypes – increasing the chances that they’ll remain on the job for many more years.
The Internal Revenue Service is getting a funding boost thanks to the Inflation Reduction Act, which President Joe Biden signed into law in 2022.
That legislative package originally included about US$80 billion to expand the tax collection agency’s budget over the next 10 years. Congress and the White House have since agreed to pare this total by about $20 billion, but $60 billion is still a big chunk of change for an agency that until recently had about $14 billion in annual funding.
I’m a tax researcher who studies how the IRS uses technology and how taxpayers respond to the agency’s growing reliance on it. While the number of IRS enforcement personnel will surely grow as a result of additional funding, I think that the agency can get more mileage out of emphasizing technological improvements.
Director of Enterprise Digitalization of 22nd Century Technologies Harrison Smith, left, demonstrates the digital intake initiative, a scanning technology for IRS paperless processing, as Secretary of the Treasury Janet Yellen and IRS Commissioner Daniel Werfel, right, look on in August 2023.Alex Wong/Getty Images
But IRS Commissioner Daniel Werfel has indicated that better enforcement won’t just rely on more tax agents and auditors. He released a plan in early 2023 promising that “technology and data advances will allow us to focus enforcement on taxpayers trying to avoid taxes, rather than taxpayers trying to pay what they owe.”
And U.S. Deputy Treasury Secretary Wally Adeyemo has said that “the IRS is going to hire more data scientists than they ever have for enforcement purposes,” with the goal of using data analytics in audits.
The IRS has tapped one form of data analytics or another to select people and companies to audit since the late 1960s. As early as 1986, it had researched ways to use artificial intelligence to improve how it selects its auditing targets.
At the same time, outdated technology is hampering the Internal Revenue Service’s effectiveness. It relies on a 60-year-old computer system to maintain and process data. That undercuts its technological agility and customer service.
Beyond data reported on tax forms themselves, like 1099s, the IRS has three main sources of data it assesses to learn more about taxpayers.
1. Past tax returns
The IRS’s National Research Program collects data to support what it calls “strategic decisions” to better enforce compliance.
The program first relies on its vast stores of taxpayer data, including prior audit results, to develop an expectation of what a given tax return may include, like a tuition tax credit for a taxpayer with a history of claiming the child tax credit. Filed returns are compared against those standards to identify potential outliers. Outliers aren’t necessarily dodging taxes or misrepresenting their tax liabilities, but big departures from the norms can indicate a higher likelihood of mistakes or evasion.
2. Publicly available data
The IRS relies on publicly available data associated with each tax return when it’s building a case for an audit.
The data, which is available to anyone who wants to find it, has increased tremendously with the rise of social media and the growing role of the internet for commerce and advertising. A social media presence can alert the IRS to a business with potential income in a way that the agency could not have identified before the internet emerged.
This includes methods that might surprise you.
As far back as 2010, for example, IRS training materials instructed agents to use a band’s social networking sites to compare musicians’ reported income with their likely income from their past performances. IRS training materials instruct agents to predict musicians’ gig income based on the number of shows a band advertises through its social media posts.
People make all sorts of financial information public today, including their side hustles and Venmo ledgers. The IRS can access and use this data like anyone else.
3. Third-party data
The IRS can also buy data.
For example, a 2020 government contract with the company Chainalysis is described, perhaps clumsily, as a contract for “pilot IRS cryptocurrency tracing.” This type of contract gives the IRS information related to otherwise untraceable income sources so that agents can detect underreporting.
What has changed in recent years is the volume of data it can access, which has skyrocketed.
Sometimes, widespread underreporting results in legislation which requires third parties to report income information to the IRS, rather than requiring the agency seek it out.
Recent legislation includes requiring third-party payment agencies like Venmo, PayPal and Uber to issue a 1099 tax form to anyone making over $600 on the app in one year. These 1099s are issued to taxpayers – and the IRS.
And the agency also hopes to use data to make paying taxes less onerous for the majority of Americans who follow the rules.
For example, when a taxpayer has a child or experiences another kind of life change that will change their tax status, the IRS wants to gain the ability to proactively notify people about the consequences – whether it’s paying more, owing less or getting a new tax credit.
Most people want to pay what they owe, no more and no less. I believe the IRS intends to make good use of its new funding to help people do just that.
Secondhand smoke may be an important but overlooked source of chronic lead exposure in kids and adolescents. That is the key finding of our recent study, published in the journal BMC Public Health.
We analyzed national data on blood lead levels and secondhand smoke exposure in 2,815 U.S. children and teenagers ages 6 to 19 from 2015 to 2018. We looked at levels of lead and a nicotine metabolite – a substance known as cotinine produced in the body’s chemical process that forms when tobacco smoke is inhaled. Levels of cotinine indicate exposure to tobacco smoke.
We found that the average blood lead levels in the intermediate and high tobacco smoke exposure groups were 18% and 29% higher, respectively, than those in the group with the lowest tobacco smoke exposure. The lowest lead exposure group was comparable to the U.S. average. A greater number of boys had detectable lead levels in their blood, as did a greater number of Black children and adolescents, compared with the other ethnic groups we studied.
Elevated blood levels were more common in children ages 6 to 10 than in older participants. Notably, children from low-income households showed 27% higher blood lead levels compared with those from high-income households.
The damage lead does to the body is irreversible.
Why it matters
Lead, unlike many other toxins, does not get diluted when exposure decreases. Nor does the body excrete it naturally. Instead, it accumulates in the bones and leaches into blood. The only way to remove it is through an oral medical treatment.
Lead exposure is more harmful to younger children than older children and adults because their bodies are still developing and they are growing so rapidly.
Children at high-exposure risk often come from low-income households in older homes built before 1978, when lead paint was still used. Young children’s frequent hand-to-mouth activity provides a pathway for lead exposure at home. Lead-containing water pipes in these older, low-income housing areas also contribute to the issue.
Despite continued efforts, lead exposure continues to pose a risk. Our findings help create awareness of the link between secondhand tobacco smoke and lead exposure, especially for young people. Approximately 35% of U.S. children, or over 23 million, were exposed to secondhand smoke between 2013 and 2016, according to the Centers for Disease Control and Prevention.
What’s next
We are working within our local areas to educate parents and school administrators about the dangers of lead poisoning, including exposure from secondhand smoke. Our efforts include encouraging individuals and communities to test their drinking water for lead and to take actions to reduce children’s lead exposure from drinking water.
We plan to conduct further studies to quantify the contribution of various sources to lead exposure. We believe that this research will enhance our understanding of children’s exposure and contribute to the improvement of environmental health disparities.
The Research Brief is a short take on interesting academic work.
LAKE COUNTY, Calif. — Lake County Animal Care and Control has more new puppies and adult dogs awaiting adopt this week.
Dogs available for adoption this week include mixes of border collie, boxer, German shepherd, Great Pyrenees, hound, pit bull, shepherd and terrier.
Dogs that are adopted from Lake County Animal Care and Control are either neutered or spayed, microchipped and, if old enough, given a rabies shot and county license before being released to their new owner. License fees do not apply to residents of the cities of Lakeport or Clearlake.
The following dogs at the Lake County Animal Care and Control shelter have been cleared for adoption.
Call Lake County Animal Care and Control at 707-263-0278 or visit the shelter online for information on visiting or adopting.
This 1 and a half year old male Great Pyrenees is in kennel No. 3, ID No. LCAC-A-5469. Photo courtesy of Lake County Animal Care and Control. Male Great Pyrenees
This 1 and a half year old male Great Pyrenees has a white coat.
He is in kennel No. 3, ID No. LCAC-A-5469.
This 2-month-old male boxer-pit bull puppy is in kennel No. 5a, ID No. LCAC-A-5806. Photo courtesy of Lake County Animal Care and Control.Boxer-pit bull puppy
This 2-month-old male boxer-pit bull puppy has a short tan coat with black and white markings.
He is in kennel No. 5a, ID No. LCAC-A-5806.
This 2-month-old male boxer-pit bull puppy is in kennel No. 5b, ID No. LCAC-A-5807. Photo courtesy of Lake County Animal Care and Control. Boxer-pit bull puppy
This 2-month-old male boxer-pit bull puppy has a short tan coat with black and white markings.
He is in kennel No. 5b, ID No. LCAC-A-5807.
This 3-month-old male terrier is in kennel No. 8a, ID No. LCAC-A-5803. Photo courtesy of Lake County Animal Care and Control. Male terrier puppy
This 3-month-old male terrier has a short tan coat.
He is in kennel No. 8a, ID No. LCAC-A-5803.
This 3-month-old male terrier is in kennel No. 8b, ID No. LCAC-A-5804. Photo courtesy of Lake County Animal Care and Control. Male terrier puppy
This 3-month-old male terrier has a short tan coat.
He is in kennel No. 8b, ID No. LCAC-A-5804.
This 1-year-old male border collie is in kennel No. 9, ID No. LCAC-A-5643. Photo courtesy of Lake County Animal Care and Control. Male border collie
This 1-year-old male border collie has a black and white coat.
He is in kennel No. 9, ID No. LCAC-A-5643.
This 6-month-old male hound-pit bull terrier puppy is in kennel No. 12, ID No. LCAC-A-5834. Photo courtesy of Lake County Animal Care and Control. Hound-pit bull terrier
This 6-month-old male hound-pit bull terrier puppy has a black coat with white markings.
He is in kennel No. 12, ID No. LCAC-A-5834.
This 6-month-old male hound-pit bull terrier puppy is in kennel No. 15a, ID No. LCAC-A-5831. Photo courtesy of Lake County Animal Care and Control. Hound-pit bull terrier
This 6-month-old male hound-pit bull terrier puppy has a black coat with white and tan markings.
He is in kennel No. 15a, ID No. LCAC-A-5831.
This 6-month-old male hound-pit bull terrier puppy is in kennel No. 15b, ID No. LCAC-A-5832. Photo courtesy of Lake County Animal Care and Control. Hound-pit bull terrier
This 6-month-old male hound-pit bull terrier puppy has a white coat with gray markings.
He is in kennel No. 15b, ID No. LCAC-A-5832.
This 3-year-old male pit bull terrier is in kennel No. 18, ID No. LCAC-A-5835. Photo courtesy of Lake County Animal Care and Control. Male pit bull terrier
This 3-year-old male pit bull terrier has a short brown coat.
He is in kennel No. 18, ID No. LCAC-A-5835.
This 1-year-old male pit bull is in kennel No. 21, ID No. LCAC-A-5616. Photo courtesy of Lake County Animal Care and Control. Male pit bull
This 1-year-old male pit bull has a short brindle coat.
He is in kennel No. 21, ID No. LCAC-A-5616.
This 2-year-old male shepherd is in kennel No. 22, ID No. LCAC-A-5423. Photo courtesy of Lake County Animal Care and Control. Male shepherd
This 2-year-old male shepherd has a black and tan coat.
He is in kennel No. 22, ID No. LCAC-A-5423.
This 1-year-old male pit bull terrier is in kennel No. 25, ID No. LCAC-A-5628. Photo courtesy of Lake County Animal Care and Control. Male pit bull terrier
This 1-year-old male pit bull terrier has a short tan coat.
He is in kennel No. 25, ID No. LCAC-A-5628.
This 1 and a half year old male shepherd is in kennel No. 26, ID No. LCAC-A-5424. Photo courtesy of Lake County Animal Care and Control. Male shepherd
This 1 and a half year old male shepherd has a short tricolor coat.
He is in kennel No. 26, ID No. LCAC-A-5424.
This 7-year-old female German shepherd is in kennel No. 30, ID No. LCAC-A-5629. Photo courtesy of Lake County Animal Care and Control. Female German shepherd
This 7-year-old female German shepherd has a black and tan coat.
She is in kennel No. 30, ID No. LCAC-A-5629.
This 2-month-old male German shepherd puppy is in kennel No. 31a, ID No. LCAC-A-5784. Photo courtesy of Lake County Animal Care and Control. Male German shepherd puppy
This 2-month-old male German shepherd puppy has a black and tan coat.
He is in kennel No. 31a, ID No. LCAC-A-5784.
“Chikis” is a 5-year-old female boxer in kennel No. 32, ID No. LCAC-A-3672. Photo courtesy of Lake County Animal Care and Control. ‘Chikis’
“Chikis” is a 5-year-old female boxer with a short brown coat.
She is in kennel No. 32, ID No. LCAC-A-3672.
“Nana” is a 2-year-old female shepherd in kennel No. 33, ID No. LCAC-A-5277. Photo courtesy of Lake County Animal Care and Control. ‘Nana’
“Nana” is a 2-year-old female shepherd mix with a short yellow coat.
She is in kennel No. 33, ID No. LCAC-A-5277.
Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it.. Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.
LAKE COUNTY, Calif. — The Board of Supervisors will officially welcome the county’s new Public Health officer this week.
The board will meet beginning at 9 a.m. Tuesday, Sept. 12, in the board chambers on the first floor of the Lake County Courthouse, 255 N. Forbes St., Lakeport.
The meeting ID is 946 4364 9954, pass code 558702. The meeting also can be accessed via one tap mobile at +16694449171,,94643649954#,,,,*558702#.
All interested members of the public that do not have internet access or a Mediacom cable subscription are encouraged to call 669-900-6833, and enter the Zoom meeting ID and pass code information above.
At 1:30 p.m., the board will administer the ceremonial oath of office to Public Health Officer Dr. Noemi C. Doohan.
The board hired Doohan last month after a lengthy search, and after the county has had an interim Public Health officer for more than a year.
The public hearing for the county’s final recommended budget for fiscal year 2023/2024 that had been planned for Tuesday will be held over to the next meeting on Sept. 19.
The full agenda follows.
CONSENT AGENDA
5.1: Adopt resolution amending Resolution No. 2023-78 establishing a new classification and amending the position allocation chart for Fiscal Year 2023-2024 to conform to the recommended budget revising salaries for classifications in Budget Unit 2111 Public Defender.
5.2: a) Approve travel to Washington DC exceeding 1,500 miles for Bruno Sabatier, Jessica Pyska, Stephen Carter and Matthew Rothstein to attend the National Association of Counties legislative conference; and b) approve travel exceeding 1,500 miles for Jessica Pyska and Bruno Sabatier to travel to the National Association of Counties Conference in Austin Texas retroactively.
5.3: Approve Amendment 1 to the agreement between county of Lake and Visit Lake County California correcting the language in section 3 compensation and authorize the chair to sign.
5.4: Adopt resolution approving MOU between county of Lake and Lake County Resource Conservation District for management of goatsrue in Lake County for July 1, 2023, through June 30, 2025, in the amount of $32,716.
5.5: Adopt resolution approving Agreement No. 23-0451-000-SA with the California Department of Food and Agriculture for Compliance with the Nursery Inspection Program for the period of July 1, 2023, through June 30, 2024, in the amount of $5000.
5.6: Adopt resolution approving Agreement No. 23-0287-000-SA with the California Department of Food and Agriculture for the Noxious Weed Program for the period of July 1, 2023, through June 30, 2025, in the amount of $42,421.
5.7: Adopt resolution approving Agreement No. 23-0026-018-SF with the California Department of Food and Agriculture to authorize eExecution of the Asian Citrus Psyllid Winter Trapping Program in the amount of $13,490 starting Oct. 1, 2023, through June 30, 2024.
5.8: Adopt resolution updating tax rates for local agencies, general obligation bonds and other voter approved indebtedness for Fiscal Year 2023-24.
5.9: Approve agreement between county of Lake and Ever Well Health Systems for adult residential support services and specialty mental health services in the amount of $75,000 for Fiscal Year 2023-24 and authorize the board chair to sign.
5.10: Adopt resolution authorizing the standard agreement between the County of Lake and the Department of Health Care Services for drug Medi-Cal services for the period of July 1, 2023, through June 30, 2027, and authorizing the Behavioral Health director to sign the standard agreement and the contractor certification clause.
5.11: Approve Amendment No. 2 to the agreement between county of Lake and the Smithwaters Group for Fiscal Years 2022-25 with no change to the contract maximum and authorize the board chair to sign.
5.12: Adopt proclamation designating the month of September 2023 as National Recovery Month in Lake County.
5.13: Approve lease between county of Lake and Berg Investments LP for 13300 East Highway 20, Unit N, Clearlake Oaks for a term commencing on July 1, 2023, and ending on Feb. 29, 2028, and authorize the Behavioral Health director to sign.
5.14: Approve Amendment No. 3 to the agreement between the Lake County Behavioral Health Services as lead administrative entity for the Lake County Continuum of Care and Sunrise Special Services Foundation with no change to the contract maximum for fiscal years 2022-23, 2023-24 and authorize the board chair to sign.
5.15: Approve Amendment No. 4 to the agreement between county of Lake and Sierra Vista for acute inpatient psychiatric hospital services and professional services associated with acute inpatient psychiatric hospitalizations in the amount of $106,572 and authorize the board chair to sign.
5.16: Approve Amendment No. 1 to the agreement between County of Lake and Adventist Health St. Helena and Vallejo for acute inpatient psychiatric hospital services and professional services associated with acute inpatient psychiatric hospitalizations in the amount of $500,000 for fiscal years 2021-22 and 2022-23 and authorize the board chair to sign.
5.17: Approve intergovernmental agreements regarding the transfer of public funds between the county of Lake and the California Department of Health Care Services for the Specialty Mental Health Services and Drug Medi-Cal Programs spanning fiscal years 2023-26 and authorize the Behavioral Health director to sign the agreements.
5.18: Approve agreement between county of Lake and Redwood Community Services Inc. for the Mental Health Services Act transitional age youth drop-in center and peer support services in the amount of $764,109.00 for fiscal years 2023-24, 2024-25, 2025-26 and authorize the board chair to sign.
5.19: Approve Amendment No. 1 to the agreement between county of Lake and Santa Rosa Behavioral Healthcare Hospital for acute inpatient psychiatric hospital services and professional services associated with acute inpatient psychiatric hospitalizations in the amount of $71,000 for fiscal year 2022-23 and authorize the board chair to sign.
5.20: Approve agreement between county of Lake and Star View Children and Family Services Inc. for youth community treatment services and specialty mental health services in the amount of $75,000 for fiscal years 2022-23, 2023-24 and authorize the board chair to sign.
5.21: Approve Board of Supervisors minutes for July 18, 2023.
5.22: Approve issuance of purchase order in the amount of up to $100,402.50 with ECS Imaging for document scanning services, and authorize the Community Development director to sign.
5.23: Approve common interest agreement between the county of Lake and the State Water Resources Control Board and Central Valley Regional Water Quality Control Board regarding investigation and potential enforcement against unlicensed cannabis cultivators and authorize the chair to sign.
5.24: Adopt proclamation designating Aug. 31 as International Overdose Awareness Day.
5.25: Approve the uniform and equipment allowance requested by the Animal Control Department for uniforms and equipment needed for animal control officers.
5.26: Waive the formal bidding requirement and authorize the IT director to issue purchase order for renewal of Microsoft Apps for Enterprise and associated licenses to Dell Marketing L.P.
5.27: Approve the agreement between the county of Lake and STRATA Architecture Planning Management for professional services for the courthouse heating ventilation and cooling system, and authorize the chair to sign.
5.28: Approve Change Order No. 1 with Wylatti Resource Management, for FEMA FMAG Culvert Replacement No. 3 Project, Federal Project No. Fema-5189-FM-CA, Bid No. 21-04 for a decrease of $9,124.48 and a revised contract amount of $246,737.30.
5.29: Approve Award of Bid for the Bartlett 99 Bridge Replacement Project, Bid No. 23-02, Federal Aid project No. BRLO-5914(111) with Stewart Engineering Inc in the amount of $2,352,435.00 and authorize the chair to sign.
5.30: Adopt resolution temporarily authorizing a road closure, prohibiting parking and authorizing the removal of vehicles and ordering the Department of Public Works to post signs for the Kelseyville Pear Festival Farm to Fork Dinner and Street Dance.
5.31: Adopt resolution temporarily authorizing a road closure, prohibiting parking and authorizing the removal of vehicles and ordering the Department of Public Works to post signs for the Kelseyville Pear Festival.
5.32: Approve Standard Agreement No. 23-5010 between county of Lake and California Department of Social Services for Resource Family Approval Program Services in the amount of $68,298.00 per fiscal year from July 1, 2023, to June 30, 2024, and b) adopt resolution authorizing the director of Social Services to sign the standard agreement.
5.33: Approve the MOU between LACOSAN and the South Lake Fire Protection District, and the California Department of Forestry and FIre Protection for operations and placement of an air curtain incinerator in Middletown at the west end of the Middletown Wastewater Treatment Plant and Authorize the chair to sign the MOU.
5.34: (a) Waive the Competitive Bid Process per Section 2-38.4, Cooperative Purchases, of the County Code and (b) Approve the Purchase of a Ford F-550 Service Truck for KCWWD#3 and authorize the Special Districts administrator/assistant purchasing agent to sign the purchase request.
5.35: Sitting as the Kelseyville Water Works District #3 Board of Directors, authorize Special Districts Administrator/Assistant purchasing agent to issue a purchase order not to exceed $74,000.00 to Thomas & Associates for the purchase of a Gorman-Rupp 6” self-priming sewage pump.
5.36: Sitting as the Lake County Sanitation District Board of Directors, authorize Special Districts administrator/assistant purchasing agent to issue a purchase order not to exceed $68,000 to Thomas & Associates for the purchase of a Gorman-Rupp 4” self-priming sewage pump.
5.37: Sitting as the Lake County Sanitation District Board of Directors, authorize Special Districts administrator/assistant purchasing agent to issue a purchase order not to exceed $85,000 to Thomas & Associates for the purchase of a Gorman-Rupp 6” self-priming sewage pump.
5.38: Sitting as the Lake County Sanitation District Board of Directors, a) Waive the competitive bidding process, pursuant to Lake County Code Section 2-38.4 Cooperative Purchases; b) authorize Special Districts administrator/assistant purchasing agent to issue a purchase order not to exceed $79,000 to Garton Tractors for the purchase of a four-wheel drive ROPS tractor.
5.39: Sitting as the Lake County Sanitation District Board of Directors, a) Waive the competitive bidding process, pursuant to Lake County Code Section 2-38.4 Cooperative Purchases; b) authorize Special Districts administrator/assistant purchasing agent to issue a purchase order not to exceed $550,000 to Owen Equipment for the purchase of a Vactor 2100i Truck.
5.40: Sitting as the Board of Directors of the Lake County Watershed Protection District, a) waive the formal bidding process, pursuant to Lake County Code Section 38.2 (2), as competitive bidding is not in the public interest due to the unique nature of the goods and services and competitive bidding would produce no economic benefit to the county, and b) approve agreement with Caltest Analytical Laboratory for water sampling analysis in the amount not to exceed $49,000 per fiscal year and authorize the Water Resources director to sign the agreement.
5.41: Sitting as the Board of Directors of the Lake County Watershed Protection District, a) Waive the formal bidding process, pursuant to Lake County Code Section 38.2 (2), as competitive bidding is not in the public interest due to the unique nature of the goods and services and b) approve agreement with Pacific Ecorisk Analytical Laboratory for water and sediment Pyrethroid toxicity analysis in the amount not to exceed $100,000 per fiscal year and authorize the Water Resources director to sign the agreement.
TIMED ITEMS
6.2, 9:07 a.m.: Pet of the Week.
6.3, 9:08 a.m.: Presentation of proclamation designating the month of September 2023 as National Recovery Month in Lake County.
6.4, 9:09 a.m.: Presentation of proclamation designating Aug. 31 as International Overdose Awareness Day.
6.5, 9:15 a.m.: Public hearing, consideration of the Final Recommended Budget for Fiscal Year 2023/2024 for the county of Lake and special districts governed by the Board of Supervisors. This item is being postponed to Sept. 19 at 1:30 p.m.
6.6: 10:15 a.m.: Public hearing, consideration of resolution approving resolutions and capital fire facility and equipment plans submitted by Lake County Fire Agencies and updating the Lake County Capital Fire Facility and Equipment Plan.
6.7, 11 a.m.: Consideration of proposed agreement between the county of Lake and PlaceWorks for planning services for the general plan and local area plan updates.
6.8, 11:30 a.m.: a) Consideration of the County of Lake acting as lead agency on a planning grant application under the Community Resilience Centers Grant Program from the California Strategic Growth Council; and b) consideration of resolution approving the application to apply for up to $500,000 in grant funds under the Community Resilience Centers Program of Strategic Growth Council of the California Department of Conservation; and c) consideration of letter of commitment and authorization for the chair to sign.
6.9, 1:30 p.m.: Administer ceremonial oath of office to Public Health Officer Dr. Noemi C. Doohan MD Ph.D. MPH.
UNTIMED ITEMS
7.2: Consideration of letter of support for the Lake County Watershed Protection District’s request for Wildlife Conservation Board funding to conduct a Clear Lake hitch habitat improvement planning and assessment for Tule Lake, Scotts Creek and Adobe Creek.
7.3: Consideration of request for motion by the board to designate the chief administrative officer as the signer for the chair on all documents as indicated by Resolution 2023-34 "Resolution of the Lake County Board of Supervisors Authorizing the Application for the Permanent Local Housing Allocation Program."
7.4: Consideration of appointment of County Librarian Christopher Veach to the North Bay Cooperative Library Systems Board of Directors.
7.5: Consideration of the following Advisory Board Appointments: First Five Lake County, Heritage Commission, Library Advisory Board, Resource Conservation District, Food Policy Council.
7.6: Consideration of Amendment One to the agreement with COAR Design Group for facility design services for the Behavioral Health Clearlake Facility Expansion Project.
7.7: Consideration of Lake County Department of Social Services department head authority to authorize contracts between $25,000 to $100,000 for out-of-county wraparound services without board approval if contracts are eligible under the master contract for wraparound services.
CLOSED SESSION
8.1: Conference with legal counsel: Significant exposure to litigation pursuant to Gov. Code section 54956.9(d)(2), (e)(1) — Two potential cases.
8.2: Public employee discipline/dismissal/release.
Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it.. Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.
Alex and Tim O’Meara say they plan to sell their popular restaurant and brewery in Lakeport, California. Courtesy photo. This article has been updated regarding the asking price.
LAKEPORT, Calif. — Nearly nine years after they opened their popular brewery and restaurant, two Lake County brothers say they have decided to put the business up for sale.
Alex and Tim O’Meara opened O'Meara Bros. Brewing Co. at 901 Bevins St. in Lakeport in December 2014, after three years of developing the business.
The restaurant has been a popular eatery since its opening, with the brothers running one of only two local breweries, which came from Tim O'Meara’s years of homebrewing.
However, the brothers said they have decided to sell the business because they want to spend more time with family.
They said their goal is to find a buyer for their turn-key restaurant and beer manufacturing facility.
The brothers would prefer to find a local entrepreneur interested in picking up where they leave off in the hopes of keeping the ownership in the community.
They also want to help foster a smooth transition for new management – helping in any way they can to ensure the business carries forward without delay.
In their announcement, the O’Meara’s did not state the asking price for the business located in the 4,400-square-foot restaurant, bar and brewery facility, which also hosts live music and entertainment.
An online listing with Santa Rosa Business and Commercial, the company who is selling the business for the O’Mearas, showed an asking price of $1.9 million for the property and business.
However, the O’Meara’s said Sunday that the actual asking price is $349,000 and does not include the property, which they do not own. They said the total asking amount in the online listing that bundled the property and business is incorrect.
Tim O’Meara said the listing incorrectly shows sales revenue as ranging between $250,000 and $500,000, with net profit of between $50,000 and $100,000. He said revenue is consistently over $1 million annually.
The O’Mearas said they are asking their friends and neighbors in Lake County to keep their ears open for a business-minded and service-oriented person to take over, someone who would continue the tradition of great food, great beer and great service at this location.
Those interested in purchasing the business may call Santa Rosa Business and Commercial at 707-526-1050 for further details.
Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it.. Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.
The Pinwheel Galaxy, or Messier 101, on May 21, 2023, four days after the light from the supernova 2023ixf reached Earth. Image credit: Steven Bellavia. BERKELEY, Calif. — Alex Filippenko is the kind of guy who brings a telescope to a party. True to form, at a soiree on May 18 this year, he wowed his hosts with images of star clusters and colorful galaxies — including the dramatic spiral Pinwheel Galaxy — and snapped telescopic photos of each.
Only late the next afternoon did he learn that a bright supernova had just been discovered in the Pinwheel Galaxy. Lo and behold, he'd also captured it, at 11 p.m. the night before — 11 and a half hours before the explosion's discovery on May 19 by amateur astronomer Koichi Itagaki in Japan.
Filippenko, a professor of astronomy at the University of California, Berkeley, graduate student Sergiy Vasylyev and postdoctoral fellow Yi Yang threw out their planned observations at the UC’s Lick Observatory on Mount Hamilton a few hours later to focus on the exploding star, which had been dubbed SN 2023ixf. They and hundreds of other astronomers were eager to observe the nearest supernova since 2014, a mere 21 million light years from Earth.
These observations were the earliest-ever measurements of polarized light from a supernova, showing more clearly the evolving shape of a stellar explosion. The polarization of light from distant sources like supernovae provides the best information on the geometry of the object emitting the light, even for events that cannot be spatially resolved.
"Some stars prior to exploding go through undulations — fitful behavior that gently ejects some of the material — so that when the supernova explodes, either the shock wave or the ultraviolet radiation causes the stuff to glow," Filippenko said. "The cool thing about the spectropolarimetry is that we get some indication of the shape and extent of the circumstellar material."
The spectropolarimetry data told a story in line with current scenarios for the final years of a red supergiant star about 10 to 20 times more massive than our sun: Energy from the explosion lit up clouds of gas that the star shed over the previous few years; the ejecta then punched through this gas, initially perpendicular to the bulk of the circumstellar material; and finally, the ejecta engulfed the surrounding gas and evolved into a rapidly expanding, but symmetric, cloud of debris.
The explosion, a Type II supernova resulting from the collapse of the iron core of a massive star, presumably left behind a dense neutron star or a black hole. Such supernovae are used as calibratable candles to measure the distances to distant galaxies and map the cosmos.
Another group of astronomers led by Ryan Chornock, a UC Berkeley adjunct associate professor of astronomy, gathered spectroscopic data using the same telescope at Lick Observatory. Graduate student Wynn Jacobson-Galán and professor Raffaella Margutti analyzed the data to reconstruct the pre- and post-explosion history of the star, and found evidence that it had shed gas for the previous three to six years before collapsing and exploding. The amount of gas shed or ejected before the explosion could have been 5% of its total mass — enough to create a dense cloud of material through which the supernova ejecta had to plow.
"I think this supernova is going to make a lot of us think in much more detail about the subtleties of the whole population of red supergiants that lose a lot of material before explosion and challenge our assumptions about mass loss," Jacobson-Galán said. "This was a perfect laboratory to understand in more detail the geometry of these explosions and the geometry of mass loss, something we already felt ignorant about."
The improved understanding of how Type II supernovae evolve could help refine their use as distance measures in the expanding universe, Vasylyev said.
The two papers describing these observations have been accepted for publication in The Astrophysical Journal Letters. Margutti and Chornock are co-authors of both papers.
One of the most studied supernovae to date
In the more than three months since the supernova's light reached Earth, perhaps three dozen papers have been submitted or published about it, with more to come as the light from the explosion continues to arrive and the observations of a variety of telescopes are analyzed.
"In the world of Type II supernovae, it's very rare to have basically every wavelength detected, from hard X-rays to soft X-rays to ultraviolet. to optical, near-infrared, radio, millimeter. So it's really a rare and unique opportunity," said Margutti, a Berkeley professor of physics and of astronomy. "These papers are the beginning of a story, the first chapter. Now we are writing the other chapters of the story of that star."
"The big-picture question here is we want to connect how a star lives with how a star dies," Chornock said. "Given the proximity of this event, it will allow us to challenge the simplifying assumptions that we have to make in most of the other supernovae we study. We have such a wealth of detail that we're going to have to figure out how to fit it all together to understand this particular object, and then that will inform our understanding of the broader universe."
Lick Observatory's telescopes on top of Mount Hamilton near San Jose were critical to the astronomers' efforts to assemble a complete picture of the supernova. The Kast spectrograph on the Shane 120-inch telescope is able to switch quickly from a normal spectrometer to a spectropolarimeter, which allowed Vasylyev and Filippenko to obtain measurements of both the spectrum and its polarization. The group led by Jacobson-Galán, Chornock and Margutti employed both the Kast spectrograph and the photometer on the Nickel 40-inch telescope, with photometry (brightness measurements) also from the Pan-STARRS telescope in Hawaii through the Young Supernova Experiment collaboration.
The polarization of light emitted by an object — that is, the orientation of the electric field of the electromagnetic wave — carries information about the shape of the object. Light from a spherically symmetric cloud, for example, would be unpolarized because the electric fields symmetrically cancel. Light from an elongated object, however, would produce a nonzero polarization.
While polarimetry measurements of supernovae have been going on for more than three decades, few are close enough — and thus bright enough — for such measurements. And no other supernova has been observed as early as 1.4 days after the explosion, as with SN 2023ixf.
The observations yielded some surprises.
"The most exciting thing is that this supernova shows a very high continuum polarization, nearly 1%, at early times," Vasylyev said. "That sounds like a small number, but it's actually a huge deviation from spherical symmetry."
Based on the changing intensity and direction of polarization, the researchers were able to identify three distinct phases in the evolution of the exploding star. Between one and three days after the explosion, the light was dominated by emission from the circumstellar medium, perhaps a disk of material or lopsided blob of gas shed earlier by the star. This was due to ionization of the surrounding gas by ultraviolet and X-ray light from the explosion and by stellar material plowing through the gas, so-called shock ionization.
"Early on, we're saying that most of the light that we're seeing is from some kind of nonspherical circumstellar medium that is confined to somewhere around 30 A.U.," Yang said. An astronomical unit (AU), the average distance between Earth and our sun, is 93 million miles.
At 3.5 days, the polarization quickly dropped by half, and then a day later shifted by nearly 70 degrees, implying an abrupt change in the geometry of the explosion. They interpret this moment, 4.6 days after explosion, as the time when the ejecta from the exploding star broke out from the dense circumstellar material.
"Essentially, it engulfs the circumstellar material, and you get this peanut-shaped geometry," Vasylyev said. "The intuition there is that the material in the equatorial plane is denser, and the ejecta get slowed down, and the path of least resistance will be toward the axis where there's less circumstellar material. That's why you get this peanut shape aligned with the preferential axis through which it explodes."
The polarization remained unchanged between days 5 and 14 after the explosion, implying that the expanding ejecta had overwhelmed the densest region of surrounding gas, allowing emission from the ejecta to dominate over light from shock ionization.
Shock ionization
The spectroscopic evolution roughly agreed with this scenario, Jacobson-Galán said. He and his team saw emissions from the gas surrounding the star about a day after the explosion, likely produced as the ejecta slammed into the circumstellar medium and produced ionizing radiation that caused the surrounding gas to emit light. Spectroscopic measurements of the light from this shock ionization showed emission lines from hydrogen, helium, carbon and nitrogen, which is typical of core-collapse supernovae.
The emissions produced by shock ionization continued for about eight days, after which it decreased, indicating that the shock wave had moved into a less dense area of space with little gas to ionize and re-emit, similar to what Vasylyev and Filippenko observed.
Margutti noted that other astronomers have looked at archival images of the Pinwheel Galaxy and found several occasions when the progenitor star brightened in the years before the explosion, suggesting that the red supergiant repeatedly sloughed off gas. This is consistent with her group's observations of ejecta from the explosion plowing through this gas, though they estimate a density about 1,000 times less than implied by the pre-explosion undulations.
Analysis of other observations, including X-ray measurements, could resolve this issue.
"This is a very special situation where we know what the progenitor was doing before because we saw it slowly oscillating, and we have all the probes in place to try to reconstruct the geometry of the circumstellar medium," she said. "And we know for a fact that it cannot be spherical. By putting together the radiant X-rays with what Wynn found and what Sergiy and Alex are finding, then we will be able to have a complete picture of the explosion."
The astronomers acknowledged the help of numerous researchers and students who gave up their observing time at Lick to allow the teams to focus on SN 2023ixf, and the observational assistance of Thomas Brink, an associate specialist in astronomy at UC Berkeley.
Filippenko captured his early photo of SN 2023ixf with a Unistellar eVscope, which has become popular among amateurs because the telescope subtracts background light and thus allows nighttime viewing in areas like cities, with lots of light pollution. He and 123 other astronomers — mostly amateurs — using Unistellar telescopes recently published their early observations of the supernova.
“This fortuitous observation, obtained while conducting public outreach in astronomy, shows that the star exploded considerably earlier than when Itagaki discovered it,” he said, jokingly adding, “I should have immediately examined my data!”
Filippenko's research was supported by Steven Nelson, the Christopher R. Redlich Fund, Landon Noll, Sunil Nagaraj, Sandy Otellini, Gary and Cynthia Bengier, Clark and Sharon Winslow, Sanford Robertson, Alan Eustace, Frank and Kathleen Wood, and numerous other donors. The work led by Chornock and Margutti was supported by the National Science Foundation, the Heising-Simons Foundation and Marc and Cristina Bensadoun.
Robert Sanders writes for the UC Berkeley News Center.