🔭 This study from 'Journal of Astrophysics and Astronomy' evaluates the performance of various machine-learning regression models to improve parameter extraction and foreground removal. bit.ly/4qWSQgi #HighEnergyAstro #ML
February 2, 2026 at 4:00 PM
🔭 This study from 'Journal of Astrophysics and Astronomy' evaluates the performance of various machine-learning regression models to improve parameter extraction and foreground removal. bit.ly/4qWSQgi #HighEnergyAstro #ML
🔭 'Pioneer of Galactic Astronomy: A Biography of Jacobus C. Kapteyn'—A fascinating biography of Jacobus C. Kapteyn, who pioneered the study of the structure of the Milky Way, culminating a century later with the GAIA satellite. bit.ly/3Nv7QDh #highenergyastro #booksky
January 26, 2026 at 5:30 PM
🔭 'Pioneer of Galactic Astronomy: A Biography of Jacobus C. Kapteyn'—A fascinating biography of Jacobus C. Kapteyn, who pioneered the study of the structure of the Milky Way, culminating a century later with the GAIA satellite. bit.ly/3Nv7QDh #highenergyastro #booksky
Editor's choice: Neights et al. have observed a gamma-ray burst that lasted 7 hours. They argue it arose from a black hole merging with a helium star. ☄️🔭 #highenergyastro #stellarastro
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
In Other Journals
Editors’ selections from the current scientific literature
www.science.org
January 19, 2026 at 12:36 PM
Editor's choice: Neights et al. have observed a gamma-ray burst that lasted 7 hours. They argue it arose from a black hole merging with a helium star. ☄️🔭 #highenergyastro #stellarastro
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
Sneaking in at the end of 2025, our Reviews of Modern Physics article on 'Neutron stars and the dense matter equation of state' is finally published! #highenergyastro 🔭⚛️
journals.aps.org/rmp/abstract...
journals.aps.org/rmp/abstract...
Neutron stars and the dense matter equation of state
Neutron stars, the remnants of supernova explosions, are the densest objects in the Universe. A typical neutron star has a mass between one and two solar masses, and a radius of around 12 km. The dens...
journals.aps.org
January 2, 2026 at 10:58 AM
Sneaking in at the end of 2025, our Reviews of Modern Physics article on 'Neutron stars and the dense matter equation of state' is finally published! #highenergyastro 🔭⚛️
journals.aps.org/rmp/abstract...
journals.aps.org/rmp/abstract...
Le CTAO au Chili devient le plus grand observatoire de rayons gamma, prêt à révéler les secrets les plus explosifs de l’univers. www.aquitaineonline.com/actu-news/in... #Space #Science #Innovation #Astrophysics #GammaRays #CTAO #HighEnergyAstro
Le désert d'Atacama devient le théâtre de la plus grande chasse aux rayons gamma de l'histoire
À Paranal, dans l’Atacama, le Chili lance la construction du CTAO, futur plus grand observatoire de rayons gamma, pour sonder l’Univers extrême.
www.aquitaineonline.com
December 21, 2025 at 10:59 AM
Le CTAO au Chili devient le plus grand observatoire de rayons gamma, prêt à révéler les secrets les plus explosifs de l’univers. www.aquitaineonline.com/actu-news/in... #Space #Science #Innovation #Astrophysics #GammaRays #CTAO #HighEnergyAstro
We are pleased to announce the publication today (19th December 2025) of a special issue consisting of a series of papers about various aspects of Pulsar Science with the Square Kilometre Array Observatory.
Links to the individual papers follow in a thread....
astro.theoj.org/issue/13006
Links to the individual papers follow in a thread....
astro.theoj.org/issue/13006
Vol. 8 Supplement, Issue 1, 2025 | Published by The Open Journal of Astrophysics
Highlights of the expected outcomes from the upcoming
SKA Observatory with game-changing large instantaneous
sensitivity, wide frequency coverage and flexible observation modes
astro.theoj.org
December 19, 2025 at 11:47 AM
And for those thinking "But what about magnetic fields? Specifically, pulsar magnetospheres?!" Here you go! Wish granted! #highenergyastro 🔭
arxiv.org/abs/2512.16157
arxiv.org/abs/2512.16157
Understanding pulsar magnetospheres with the SKAO
The SKA telescopes will bring unparalleled sensitivity across a broad radio band, a wide field of view across the Southern sky, and the capacity for sub-arraying, all of which make them the ideal inst...
arxiv.org
December 19, 2025 at 8:02 AM
And for those thinking "But what about magnetic fields? Specifically, pulsar magnetospheres?!" Here you go! Wish granted! #highenergyastro 🔭
arxiv.org/abs/2512.16157
arxiv.org/abs/2512.16157
If you want to know "what will the SKA do for our understanding of the dense matter EOS?", look no further! #highenergyastro 🔭
arxiv.org/abs/2512.16162
arxiv.org/abs/2512.16162
Probing neutron star interiors and the properties of cold ultra-dense matter with the SKAO
Matter inside neutron stars is compressed to densities several times greater than nuclear saturation density, while maintaining low temperatures and large asymmetries between neutrons and protons. Neu...
arxiv.org
December 19, 2025 at 8:02 AM
If you want to know "what will the SKA do for our understanding of the dense matter EOS?", look no further! #highenergyastro 🔭
arxiv.org/abs/2512.16162
arxiv.org/abs/2512.16162
Loads of Square Kilometer Array pulsar goodness on the arXiv this morning!! #highenergyastro 🔭 For an overview of all of the papers see here:
arxiv.org/abs/2512.16152
arxiv.org/abs/2512.16152
Pulsar Science with the SKA Observatory
The large instantaneous sensitivity, a wide frequency coverage and flexible observation modes with large number of beams in the sky are the main features of the SKA observatory's two telescopes, the S...
arxiv.org
December 19, 2025 at 8:02 AM
Loads of Square Kilometer Array pulsar goodness on the arXiv this morning!! #highenergyastro 🔭 For an overview of all of the papers see here:
arxiv.org/abs/2512.16152
arxiv.org/abs/2512.16152
I have been alive for 15,353 days today. I have reached the # of Life, the Universe, and Everything.
My birthday wish is that a) you do something kind today, b) read, skim, or share something I wrote for science, and c) do a little jig. 🧪⚛️ #highenergyastro
www.jamiezvirzdin.com/publications...
My birthday wish is that a) you do something kind today, b) read, skim, or share something I wrote for science, and c) do a little jig. 🧪⚛️ #highenergyastro
www.jamiezvirzdin.com/publications...
Publications
arXiv preprint https://doi.org/10.48550/arXiv.2512.01638 December 1, 2025 Using 14 years of data from the Telescope Array in Utah, this study searched for ultrahigh-energy photons...
www.jamiezvirzdin.com
December 13, 2025 at 8:14 AM
I have been alive for 15,353 days today. I have reached the # of Life, the Universe, and Everything.
My birthday wish is that a) you do something kind today, b) read, skim, or share something I wrote for science, and c) do a little jig. 🧪⚛️ #highenergyastro
www.jamiezvirzdin.com/publications...
My birthday wish is that a) you do something kind today, b) read, skim, or share something I wrote for science, and c) do a little jig. 🧪⚛️ #highenergyastro
www.jamiezvirzdin.com/publications...
🧪☄️🔭 #highenergyastro
NEW: First Radio Detection of Rare Supernova Type, Revealing Secrets of Stellar Death
Brand new discovery from the Very Large Array! 💥 Astronomers have captured the first-ever radio signals from a rare class of stellar explosion known as a Type Ibn supernova.
#Astronomy #RadioAstronomy #Supernova
Brand new discovery from the Very Large Array! 💥 Astronomers have captured the first-ever radio signals from a rare class of stellar explosion known as a Type Ibn supernova.
#Astronomy #RadioAstronomy #Supernova
First Radio Detection of Rare Supernova Type, Revealing Secrets of Stellar Death
Astronomers using the NSF’s Very Large Array have detected the first-ever radio signals from a rare Type Ibn supernova, revealing how a massive star shed helium-rich material in its final years before...
public.nrao.edu
December 12, 2025 at 10:25 PM
🧪☄️🔭 #highenergyastro
New paper! Led by PhD student Bas Dorsman, and continuing the fine tradition of @api.uva.nl studies of the accreting millisecond pulsar SAX J1808.4-3658 (discovered many moons ago by Rudy Wijnands and Michel van der Klis AT THIS VERY INSTITUTE). #highenergyastro 🔭
arxiv.org/abs/2511.07152
arxiv.org/abs/2511.07152
Pulse profile modelling of the accretion-powered millisecond pulsar SAX J1808.4-3658 using NICER data from its 2019 and 2022 outbursts
Pulse profile modelling is a relativistic ray-tracing technique that has provided constraints on parameters, with a focus on mass and radius, of five rotation-powered millisecond pulsars. While the te...
arxiv.org
November 11, 2025 at 8:48 AM
New paper! Led by PhD student Bas Dorsman, and continuing the fine tradition of @api.uva.nl studies of the accreting millisecond pulsar SAX J1808.4-3658 (discovered many moons ago by Rudy Wijnands and Michel van der Klis AT THIS VERY INSTITUTE). #highenergyastro 🔭
arxiv.org/abs/2511.07152
arxiv.org/abs/2511.07152
New paper 🚨! "Equation of state informed pulse profile modelling", led jointly by @api.uva.nl PhD student Mariska Hoogkamer and UNH's Nathan Rutherford. A project with some unexpected twists .... 🔭 #highenergyastro 🧵1/
arxiv.org/abs/2510.27619
arxiv.org/abs/2510.27619
Equation-of-state-informed pulse profile modeling
NICER has enabled mass-radius inferences for pulsars using pulse profile modeling, providing constraints on the equation of state (EOS) of cold, dense matter. To date, PPM and EOS inference have been ...
arxiv.org
November 3, 2025 at 10:24 AM
New paper 🚨! "Equation of state informed pulse profile modelling", led jointly by @api.uva.nl PhD student Mariska Hoogkamer and UNH's Nathan Rutherford. A project with some unexpected twists .... 🔭 #highenergyastro 🧵1/
arxiv.org/abs/2510.27619
arxiv.org/abs/2510.27619
The eXTP dense matter white paper is published! eXTP is going to be a great telescope for e.g. pulse profile modeling of both rotation-powered and accretion-powered millisecond pulsars. Launching in 2030! #highenergyastro 🔭 #densematter #neutronstars
ui.adsabs.harvard.edu/abs/2025SCPM...
ui.adsabs.harvard.edu/abs/2025SCPM...
Dense matter in neutron stars with eXTP
In this white paper, we present the potential of the enhanced X-ray timing and polarimetry (eXTP) mission to constrain the equation of state of dense matter in neutron stars, exploring regimes not dir...
ui.adsabs.harvard.edu
October 8, 2025 at 3:41 PM
The eXTP dense matter white paper is published! eXTP is going to be a great telescope for e.g. pulse profile modeling of both rotation-powered and accretion-powered millisecond pulsars. Launching in 2030! #highenergyastro 🔭 #densematter #neutronstars
ui.adsabs.harvard.edu/abs/2025SCPM...
ui.adsabs.harvard.edu/abs/2025SCPM...
An amusing footnote in a preprint:
"for brevity, we refer to this as the Ravasio Line, following the established tradition in our field [gamma-ray bursts] of naming things after Italians."
☄️ #HighEnergyAstro
arxiv.org/abs/2410.00286
"for brevity, we refer to this as the Ravasio Line, following the established tradition in our field [gamma-ray bursts] of naming things after Italians."
☄️ #HighEnergyAstro
arxiv.org/abs/2410.00286
Fermi-GBM Team Analysis on The Ravasio Line
The prompt spectra of gamma-ray bursts are known to follow broadband continuum behavior over decades in energy. GRB 221009A, given the moniker the brightest of all time (BOAT), is the brightest gamma-...
arxiv.org
September 19, 2025 at 4:05 PM
An amusing footnote in a preprint:
"for brevity, we refer to this as the Ravasio Line, following the established tradition in our field [gamma-ray bursts] of naming things after Italians."
☄️ #HighEnergyAstro
arxiv.org/abs/2410.00286
"for brevity, we refer to this as the Ravasio Line, following the established tradition in our field [gamma-ray bursts] of naming things after Italians."
☄️ #HighEnergyAstro
arxiv.org/abs/2410.00286
Astronomers spot mysterious gamma-ray explosion, unlike any detected before! 💥
Our VLT revealed that its source lies outside our galaxy. Yet its cause is still unknown 🤔 Read more: https://www.eso.org/public/news/eso2514/
🔭 🧪 ☄️
#extragalactic
#highenergyastro
Our VLT revealed that its source lies outside our galaxy. Yet its cause is still unknown 🤔 Read more: https://www.eso.org/public/news/eso2514/
🔭 🧪 ☄️
#extragalactic
#highenergyastro
September 9, 2025 at 12:02 PM
Astronomers spot mysterious gamma-ray explosion, unlike any detected before! 💥
Our VLT revealed that its source lies outside our galaxy. Yet its cause is still unknown 🤔 Read more: https://www.eso.org/public/news/eso2514/
🔭 🧪 ☄️
#extragalactic
#highenergyastro
Our VLT revealed that its source lies outside our galaxy. Yet its cause is still unknown 🤔 Read more: https://www.eso.org/public/news/eso2514/
🔭 🧪 ☄️
#extragalactic
#highenergyastro
I am citable! Check it out:
Zvirzdin, J. (2025, January 27). Psst . . . Your AI Is Showing: How to Put Your Own Voice in Scientific Papers. Workshop on Machine Learning for Analysis of High-Energy Cosmic Particles, University of Delaware. doi.org/10.5281/zeno...
#highenergyastro #ai ⚛️🧪
Zvirzdin, J. (2025, January 27). Psst . . . Your AI Is Showing: How to Put Your Own Voice in Scientific Papers. Workshop on Machine Learning for Analysis of High-Energy Cosmic Particles, University of Delaware. doi.org/10.5281/zeno...
#highenergyastro #ai ⚛️🧪
Psst . . . Your AI Is Showing: How to Put Your Own Voice in Scientific Papers
AI tools shape writing style in ways that dull clarity, variety, rhythm, and voice. Editors, publishers, grant-givers, and professors are familiar with—and tired of—the linguistic tics of the AI voice...
doi.org
August 26, 2025 at 11:43 PM
I am citable! Check it out:
Zvirzdin, J. (2025, January 27). Psst . . . Your AI Is Showing: How to Put Your Own Voice in Scientific Papers. Workshop on Machine Learning for Analysis of High-Energy Cosmic Particles, University of Delaware. doi.org/10.5281/zeno...
#highenergyastro #ai ⚛️🧪
Zvirzdin, J. (2025, January 27). Psst . . . Your AI Is Showing: How to Put Your Own Voice in Scientific Papers. Workshop on Machine Learning for Analysis of High-Energy Cosmic Particles, University of Delaware. doi.org/10.5281/zeno...
#highenergyastro #ai ⚛️🧪
We just published our second paper on this topic! Our #TelescopeArray detectors help us understand energy mechanisms behind both cosmic rays 🌠and lightning.🌩️ Support your local scientists and the National Science Foundation! 💞💸
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
#highenergyastro 🧪⚛️
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
#highenergyastro 🧪⚛️
Time‐Resolved Leader Spectra of Downward Terrestrial Gamma‐Ray Flashes Observed at the Telescope Array Surface Detector
Time-resolved leader spectra associated with two downward Terrestrial Gamma-ray Flashes (TGFs)–a low peak current and a high peak current event–are presented The high-peak-current event exhibits ...
agupubs.onlinelibrary.wiley.com
August 20, 2025 at 11:24 AM
We just published our second paper on this topic! Our #TelescopeArray detectors help us understand energy mechanisms behind both cosmic rays 🌠and lightning.🌩️ Support your local scientists and the National Science Foundation! 💞💸
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
#highenergyastro 🧪⚛️
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
#highenergyastro 🧪⚛️
One more paper from the group out arxiv.org/abs/2508.00062 🎉 Led by Lieke Sippens Groenewegen, who finished her MSc in my group @grappainstitute.bsky.social in February, and with @sanjanacurtis.bsky.social we developed an end-to-end pipeline for kilonova lightcurves and spectra #highenergyastro 🔭🧪
August 5, 2025 at 9:11 AM
One more paper from the group out arxiv.org/abs/2508.00062 🎉 Led by Lieke Sippens Groenewegen, who finished her MSc in my group @grappainstitute.bsky.social in February, and with @sanjanacurtis.bsky.social we developed an end-to-end pipeline for kilonova lightcurves and spectra #highenergyastro 🔭🧪
I remotely operate sensitive cosmic-ray telescopes in the West Desert of Utah. Wild that we can pick up the light from this wildfire. Be safe, Sevier County!
Select Band="Fire Temperature RGB"
www.star.nesdis.noaa.gov/goes/wfo_ban...
#Utah #UofU #TelescopeArray #highenergyastro 🧪
Select Band="Fire Temperature RGB"
www.star.nesdis.noaa.gov/goes/wfo_ban...
#Utah #UofU #TelescopeArray #highenergyastro 🧪
July 26, 2025 at 4:30 AM
I remotely operate sensitive cosmic-ray telescopes in the West Desert of Utah. Wild that we can pick up the light from this wildfire. Be safe, Sevier County!
Select Band="Fire Temperature RGB"
www.star.nesdis.noaa.gov/goes/wfo_ban...
#Utah #UofU #TelescopeArray #highenergyastro 🧪
Select Band="Fire Temperature RGB"
www.star.nesdis.noaa.gov/goes/wfo_ban...
#Utah #UofU #TelescopeArray #highenergyastro 🧪
@genevieveschroeder.bsky.social (Cornell) et al. present late-time radio imaging of a sample of SNe Ic-BL. In the images here, at the optical location (left) of SN PTF10tqv, they detect very late-time (> 10 years !!!) emission with the VLA (middle) and MeerKAT (right).
🧪🔭☄️👩🔬 #highenergyastro
🧪🔭☄️👩🔬 #highenergyastro
July 23, 2025 at 2:22 AM
@genevieveschroeder.bsky.social (Cornell) et al. present late-time radio imaging of a sample of SNe Ic-BL. In the images here, at the optical location (left) of SN PTF10tqv, they detect very late-time (> 10 years !!!) emission with the VLA (middle) and MeerKAT (right).
🧪🔭☄️👩🔬 #highenergyastro
🧪🔭☄️👩🔬 #highenergyastro
Scientists can regain public trust by a) being honest in their work and b) not being so proudly inaccessible in their writing. The best physics writing uses different kinds of stories, and I also tell my own.
aeon.co/essays/to-un...
@aeon.co #scicomm #writing #editing #publishing #highenergyastro ⚛️
aeon.co/essays/to-un...
@aeon.co #scicomm #writing #editing #publishing #highenergyastro ⚛️
To understand physics, we need to tell – and hear – stories | Aeon Essays
Don’t be intimidated by physics: it is made of stories and metaphors. Learn these and the field will open up to you
aeon.co
July 22, 2025 at 2:10 PM
Scientists can regain public trust by a) being honest in their work and b) not being so proudly inaccessible in their writing. The best physics writing uses different kinds of stories, and I also tell my own.
aeon.co/essays/to-un...
@aeon.co #scicomm #writing #editing #publishing #highenergyastro ⚛️
aeon.co/essays/to-un...
@aeon.co #scicomm #writing #editing #publishing #highenergyastro ⚛️
Welcome to the High Energy Astrophysics feed!
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FAQ: The High Energy Astrophysics Feed
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astrosky.eco
July 16, 2025 at 9:55 AM
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astrosky.eco
July 16, 2025 at 9:51 AM
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astrosky.eco
July 16, 2025 at 9:44 AM
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