Jessie Shelton
@jsheltino.bsky.social
occasional particle physics
Reposted by Jessie Shelton
Two very interesting papers about dark energy on the arXiv today, both very relevant to the ongoing interest in possibly evolving DE as suggested by the DESI results 🔭🧪
Here's the first and potentially more explosive one: arxiv.org/abs/2511.07517
Here's the first and potentially more explosive one: arxiv.org/abs/2511.07517
The Dark Energy Survey Supernova Program: A Reanalysis Of Cosmology Results And Evidence For Evolving Dark Energy With An Updated Type Ia Supernova Calibration
We present improved cosmological constraints from a re-analysis of the Dark Energy Survey (DES) 5-year sample of Type Ia supernovae (DES-SN5YR). This re-analysis includes an improved photometric cross...
arxiv.org
November 12, 2025 at 11:42 AM
Two very interesting papers about dark energy on the arXiv today, both very relevant to the ongoing interest in possibly evolving DE as suggested by the DESI results 🔭🧪
Here's the first and potentially more explosive one: arxiv.org/abs/2511.07517
Here's the first and potentially more explosive one: arxiv.org/abs/2511.07517
Reposted by Jessie Shelton
Six of the nine Nobel Prize winners this year work in the U.S.
Three of the six were born outside the U.S., which is the pattern most years. No country has benefited more from welcoming immigrants from around the world.
www.nobelprize.org
Three of the six were born outside the U.S., which is the pattern most years. No country has benefited more from welcoming immigrants from around the world.
www.nobelprize.org
The official website of the Nobel Prize - NobelPrize.org
The Nobel Prize rewards science, humanism and peace efforts. This is one of the central concepts in the will of Alfred Nobel, and it also permeates the outreach activities that have been developed for...
www.nobelprize.org
October 8, 2025 at 12:37 PM
Six of the nine Nobel Prize winners this year work in the U.S.
Three of the six were born outside the U.S., which is the pattern most years. No country has benefited more from welcoming immigrants from around the world.
www.nobelprize.org
Three of the six were born outside the U.S., which is the pattern most years. No country has benefited more from welcoming immigrants from around the world.
www.nobelprize.org
New paper! with Raymond Co, Nico Fernandez, Akshay Ghalsasi, and Keisuke Harigaya, we look at well-motivated axion models that allow us to change the expansion history of the universe AFTER BBN
arxiv.org/abs/2510.01308
arxiv.org/abs/2510.01308
Enhanced Matter Power Spectrum from Axion Kination after Big Bang Nucleosynthesis
Despite stringent constraints from Big Bang Nucleosynthesis (BBN) and cosmic microwave background (CMB) observations, it is still possible for well-motivated particle physics models to substantially a...
arxiv.org
October 3, 2025 at 3:51 PM
New paper! with Raymond Co, Nico Fernandez, Akshay Ghalsasi, and Keisuke Harigaya, we look at well-motivated axion models that allow us to change the expansion history of the universe AFTER BBN
arxiv.org/abs/2510.01308
arxiv.org/abs/2510.01308
despite all the everything, going to try to use this to talk physics a bit, which is to say, today is a paper day
October 3, 2025 at 3:49 PM
despite all the everything, going to try to use this to talk physics a bit, which is to say, today is a paper day
Reposted by Jessie Shelton
New: After a long wait, the GRFP solicitation is live! Deadlines have been extended to early November, so applicants have a bit over a month to submit. www.nsf.gov/funding/oppo...
NSF Graduate Research Fellowship Program (GRFP)
www.nsf.gov
September 26, 2025 at 3:45 PM
New: After a long wait, the GRFP solicitation is live! Deadlines have been extended to early November, so applicants have a bit over a month to submit. www.nsf.gov/funding/oppo...
Reposted by Jessie Shelton
Exciting news! We're hiring for a new theoretical particle physics faculty member at UTK this year: academicjobsonline.org/ajo/jobs/30681
University of Tennessee, Knoxville, Department of Physics & Astronomy
Job #AJO30681, Assistant Professor Theoretical Particle Physics, Department of Physics & Astronomy, University of Tennessee, Knoxville, Knoxville, Tennessee, US
academicjobsonline.org
September 26, 2025 at 2:58 PM
Exciting news! We're hiring for a new theoretical particle physics faculty member at UTK this year: academicjobsonline.org/ajo/jobs/30681
This is just what it’s like to be an obligate user of speech recognition software (minus the swearing)
![Comic. PERSON 1: That movie was so good. Maybe even the greatest movie of all time question mark? PERSON 2: Yeah comma, but you said that about italics *Charlie’s Angels Colon: Full Throttle* period. Paragraph break. I question your judgement period. [caption] When people say “question mark” out loud as a rhetorical device, it always makes me want to say my other punctuation and formatting too.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreihxesft4pcq3aeu62qofxlnddonvqehkf7o2n4kwtot3a6zh6qj6y@jpeg)
September 18, 2025 at 9:27 PM
This is just what it’s like to be an obligate user of speech recognition software (minus the swearing)
Reposted by Jessie Shelton
The GRFP lives!! (due end of October)
www.nsf.gov/funding/oppo...
www.nsf.gov/funding/oppo...
NSF Graduate Research Fellowship Program (GRFP)
www.nsf.gov
September 8, 2025 at 6:23 PM
The GRFP lives!! (due end of October)
www.nsf.gov/funding/oppo...
www.nsf.gov/funding/oppo...
Reposted by Jessie Shelton
To comment, you need specific information: 1) the DHS docket number ICEB-2025-0001, the OMB control number OMB Control Number 1615–0003 (which must be included in the text of the comment to make it count), and the website to leave a comment is: www.regulations.gov/commenton/IC... . Please share.
Trump admin planning to change student visas from lasting for duration of academic program to fixed 4-yr term, and then much harder to renew
Could destroy US ability to attract global talent, particularly those seeking advanced degrees in STEM. The median time to complete a PhD is 5.7 yrs per NSF.
Could destroy US ability to attract global talent, particularly those seeking advanced degrees in STEM. The median time to complete a PhD is 5.7 yrs per NSF.
Trump Deals A New Immigration Blow To International Students
Trump officials have proposed a new rule limiting international students to fixed periods of entry, making a U.S. education more precarious.
www.forbes.com
August 29, 2025 at 1:40 PM
To comment, you need specific information: 1) the DHS docket number ICEB-2025-0001, the OMB control number OMB Control Number 1615–0003 (which must be included in the text of the comment to make it count), and the website to leave a comment is: www.regulations.gov/commenton/IC... . Please share.
Reposted by Jessie Shelton
Sharing gift link. This story is a must-read for all who care about science in America and having a reasonable, well-functioning government, which this one is clearly not.
How Many Times Can Science Funding Be Canceled?
Whether or not Congress cuts NIH’s budget, the Trump administration has devastated its ability to operate.
www.theatlantic.com
August 6, 2025 at 7:58 PM
Sharing gift link. This story is a must-read for all who care about science in America and having a reasonable, well-functioning government, which this one is clearly not.
Reposted by Jessie Shelton
I can’t recommend this enough.
UNBREAKING, a new project from @lizneeley.bsky.social & co, documents & explains our many concurrent institutional collapses.
It’s beautifully executed work, full of intellectual & moral clarity. 3 pages are live, more will come. It’s SO GOOD, & I learned so much.
UNBREAKING, a new project from @lizneeley.bsky.social & co, documents & explains our many concurrent institutional collapses.
It’s beautifully executed work, full of intellectual & moral clarity. 3 pages are live, more will come. It’s SO GOOD, & I learned so much.
👋 Hi, we’re Unbreaking, a volunteer-run collective working to document our current moment of institutional collapse and its human costs—as well as the pushback and resilience work already underway. We believe this is critical work for building and retaining political agency.
May 19, 2025 at 10:42 PM
I can’t recommend this enough.
UNBREAKING, a new project from @lizneeley.bsky.social & co, documents & explains our many concurrent institutional collapses.
It’s beautifully executed work, full of intellectual & moral clarity. 3 pages are live, more will come. It’s SO GOOD, & I learned so much.
UNBREAKING, a new project from @lizneeley.bsky.social & co, documents & explains our many concurrent institutional collapses.
It’s beautifully executed work, full of intellectual & moral clarity. 3 pages are live, more will come. It’s SO GOOD, & I learned so much.
Reposted by Jessie Shelton
I am so heartened to this seriously AWESOME #SaveNSF website go up today!!!!
Has a take action toolkit with:
1. Press outreach templates
2. Social media toolkit
3. Elected official outreach
4. Talking points
Check it out and share widely!!!! Likely more to come.
www.savensf.com
Has a take action toolkit with:
1. Press outreach templates
2. Social media toolkit
3. Elected official outreach
4. Talking points
Check it out and share widely!!!! Likely more to come.
www.savensf.com
May 2, 2025 at 10:08 PM
I am so heartened to this seriously AWESOME #SaveNSF website go up today!!!!
Has a take action toolkit with:
1. Press outreach templates
2. Social media toolkit
3. Elected official outreach
4. Talking points
Check it out and share widely!!!! Likely more to come.
www.savensf.com
Has a take action toolkit with:
1. Press outreach templates
2. Social media toolkit
3. Elected official outreach
4. Talking points
Check it out and share widely!!!! Likely more to come.
www.savensf.com
Reposted by Jessie Shelton
I have tariffed
the penguins
that are on
Heard Island
and which
you were probably
assuming
did not export goods
forgive me
they were taking advantage of us
so cunning
and so cold
the penguins
that are on
Heard Island
and which
you were probably
assuming
did not export goods
forgive me
they were taking advantage of us
so cunning
and so cold
April 3, 2025 at 7:45 PM
I have tariffed
the penguins
that are on
Heard Island
and which
you were probably
assuming
did not export goods
forgive me
they were taking advantage of us
so cunning
and so cold
the penguins
that are on
Heard Island
and which
you were probably
assuming
did not export goods
forgive me
they were taking advantage of us
so cunning
and so cold
Reposted by Jessie Shelton
Discovery Prospects for a Minimal Dark Matter Model at Cosmic and Intensity Frontier Experiments
https://arxiv.org/pdf/2504.00077
Ahmed Alenezi, Cari Cesarotti, Stefania Gori, Jessie Shelton.
https://arxiv.org/pdf/2504.00077
Ahmed Alenezi, Cari Cesarotti, Stefania Gori, Jessie Shelton.
https://arxiv.org/abs/2504.00077
arXiv abstract link
arxiv.org
April 2, 2025 at 6:26 AM
Discovery Prospects for a Minimal Dark Matter Model at Cosmic and Intensity Frontier Experiments
https://arxiv.org/pdf/2504.00077
Ahmed Alenezi, Cari Cesarotti, Stefania Gori, Jessie Shelton.
https://arxiv.org/pdf/2504.00077
Ahmed Alenezi, Cari Cesarotti, Stefania Gori, Jessie Shelton.
Reposted by Jessie Shelton
Awesome news. Rubin is the scientist perhaps most closely identified with the discovery that galaxy rotation cannot be explained with Newton’s law of gravity applied to the gas and stars they contain. This led directly to the idea that dark matter dominates the gravity of galaxies at large radii. 🧪
Vera Rubin has been selected to be featured on the back of a quarter. She is the first astronomer to be honored this way. Read about her research on the Andromeda galaxy and how it led to the discovery of dark matter in this article written by Rubin herself. doi.org/10.1063/1.24...
🔭 #WomenInStem
🔭 #WomenInStem
March 10, 2025 at 10:26 PM
Awesome news. Rubin is the scientist perhaps most closely identified with the discovery that galaxy rotation cannot be explained with Newton’s law of gravity applied to the gas and stars they contain. This led directly to the idea that dark matter dominates the gravity of galaxies at large radii. 🧪
Reposted by Jessie Shelton
Just a reminder that Germany was the center of scientific progress until the Nazis suppressed, drove away, or killed all the non-Nazi scientists.
February 13, 2025 at 6:54 PM
Just a reminder that Germany was the center of scientific progress until the Nazis suppressed, drove away, or killed all the non-Nazi scientists.
Reposted by Jessie Shelton
“A report from the Lawrence Berkeley National Laboratory estimates that U.S. data centers went from 1.9 percent of total electrical consumption in 2018 to 4.4 percent in 2023 and will consume 6.7 percent to 12 percent in 2028. Microsoft alone intends….”
www.nytimes.com/2025/01/12/o...
www.nytimes.com/2025/01/12/o...
Opinion | The Old World Is Breaking Down. A New One Is Breaking Through. (Gift Article)
Four trends are converging to make life much scarier.
www.nytimes.com
January 12, 2025 at 5:46 PM
“A report from the Lawrence Berkeley National Laboratory estimates that U.S. data centers went from 1.9 percent of total electrical consumption in 2018 to 4.4 percent in 2023 and will consume 6.7 percent to 12 percent in 2028. Microsoft alone intends….”
www.nytimes.com/2025/01/12/o...
www.nytimes.com/2025/01/12/o...
Three-day workshops: great! Three-day workshops including a weekend day: very bad for anyone with kids
November 11, 2024 at 6:39 PM
Three-day workshops: great! Three-day workshops including a weekend day: very bad for anyone with kids
Reposted by Jessie Shelton
"average president has been convicted of .75 felonies" factoid actualy just statistical error. average president has been convicted of 0 felonies. Felonies Donald, who lives in Florida & commits 34 felonies, is an outlier adn should not have been counted
May 30, 2024 at 9:23 PM
"average president has been convicted of .75 felonies" factoid actualy just statistical error. average president has been convicted of 0 felonies. Felonies Donald, who lives in Florida & commits 34 felonies, is an outlier adn should not have been counted
Reposted by Jessie Shelton
April 22, 2024 at 6:03 PM
Hello world! Possibly the “occasional particle physics” my bio mentions will be less occasional over here
November 1, 2023 at 3:14 AM
Hello world! Possibly the “occasional particle physics” my bio mentions will be less occasional over here