#fastradiobursts — Public Fediverse posts

Mysterious Radio Bursts Help Track the Universe’s Missing Matter

Artist’s impression of a fast radio burst traveling through space and reaching Earth. Credit: WikiMedia Commons Fast radio…
#NewsBeep #News #Science #CA #Canada #Fastradiobursts #FRB
https://www.newsbeep.com/ca/896567/

Baryons in the Darkest Sites of the Universe: https://iopscience.iop.org/article/10.3847/2041-8213/ae81ac -> Diving into the Darkest Corners of the Universe with #FastRadioBursts: https://aasnova.org/2026/08/05/diving-into-the-darkest-corners-of-the-universe-with-fast-radio-bursts/

Diffuse puffs of “missing” matter surround most galaxies | MIT News

Stars and galaxies make up much of the universe’s ordinary, observable matter. But for decades, scientists have wrestled…
#NewsBeep #News #Physics #Astronomy #Astrophysics #baryonicmatter #CA #Canada #Chime #Fastradiobursts #GalaxyFormation #HaochenWang #KiyoshiMasui #missingmatter #MITKavliInstitute #MITPhysics #Science
https://www.newsbeep.com/ca/816680/

Diffuse puffs of “missing” matter surround most galaxies | MIT News

Stars and galaxies make up much of the universe’s ordinary, observable matter. But for decades, scientists have wrestled…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Astronomy #Astrophysics #baryonicmatter #Chime #fastradiobursts #GalaxyFormation #HaochenWang #KiyoshiMasui #missingmatter #MITKavliInstitute #MITphysics #Science
https://www.newsbeep.com/us/776063/

Diffuse puffs of “missing” matter surround most galaxies | MIT News

Stars and galaxies make up much of the universe’s ordinary, observable matter. But for decades, scientists have wrestled…
#NewsBeep #News #Physics #astronomy #Astrophysics #baryonicmatter #CHIME #FastRadioBursts #GalaxyFormation #HaochenWang #KiyoshiMasui #missingmatter #MITKavliInstitute #MITphysics #Science #UK #UnitedKingdom
https://www.newsbeep.com/uk/703542/

Weekly Update from the Open Journal of Astrophysics 11/07/2026

Back home to Maynooth, just in time for another Saturday update of activity at the Open Journal of Astrophysics. Since the last update we have published a further nine papers, bringing the number in Volume 9 (2026) to 145 and the total so far published by OJAp up to 593.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Tuesday 7th July, is “The Information Content of Quasar Variability Light Curves: How Well Can we Infer Stochastic Model Parameters?” by Brendon Brewer (U. Auckland, NZ), Geraint F. Lewis (U. Sydney, AU), Xiang Yu & Yuan Li (Auckland). Published in the folder Astrophysics of Galaxies, this study suggests that quasar variability studies should focus on the short term volatility parameter, as it’s more informative than the variability timescale. Volatility decreases with redshift suggesting intrinsic effects.

The overlay for this paper is here

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/116877118638227811

The second paper for this week, also published on Tuesday 7th July, but in the folder High-Energy Astrophysical Phenomena, is “Cygnus X-3 as a PeVatron and the LHAASO 2025 data” by Michael Kachelriess & E. Lammert (NTNU, Trondheim, Norway). This paper suggests that the high-mass X-ray binary Cygnus X-3 can accelerate cosmic rays beyond PeV energies, contributing to a photon flux peaking around PeV energies.

The overlay looks like this:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/116877369307135417

The third paper of the week, also published on Tuesday 7th July, but in the folder Cosmology and Nongalactic Astrophysics is “The DESI DR1 Peculiar Velocity Survey: growth rate measurements from galaxy and momentum correlation functions” by Ryan J Turner (Swinburne Institute of Technology, Australia) and 63 others from around the world. This paper analyzes local peculiar velocity and galaxy density fields to test cosmological models of gravity, finding results consistent with predictions from Planck+ΛCDM cosmology and general relativity.

The overlay for this one is here:

The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116877601913437714

The fourth paper of the week, published on Wednesday 8th July in the folder Instrumentation and Methods for Astrophysics , is “Morphological Fingerprints of Forbush Decreases and Their Relation to Geomagnetic Storm Severity” by Juan Diego Perez Navarro and David Sierra Porta (Universidad Tecnológica de Bolívar, Colombia). This article introduces a graph-based method to analyze Forbush decreases (FDs), transient depressions in cosmic-ray flux, and uses network signatures to predict geomagnetic storm intensity.

The overlay for this one is here:

You can read the final version of this one on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116837827227415689

The fifth paper of the week, also published on Wednesday 8th July but in the folder Astrophysics of Galaxies, is “On the connection between galaxy orientation and halo absorption properties” by Rohan Venkat, Soo May Wee, and Hsiao-Wen Chen (U. Chicago, USA). This article investigates the azimuthal dependence of metal-line absorption in the circumgalactic medium of 87 isolated galaxies. The results show no significant correlation between absorption strength and azimuthal angle.

The overlay for this one is here:

You can read the final version of this one on arXiv here and the Mastodon announcement is here:

The sixth paper of this week is “Searching for Periodicity in FRB 20240114A” by Jonathan I Katz (Washington U., USA). This was published on Thursday 9th July in the folder High-Energy Astrophysical Phenomena. The study described in this paper observed FRB 20240114A, an active Fast Radio Burst, but found no significant periodicity in its bursts, contradicting magnetar models predictions.

The overlay for this one is here:

You can find the final accepted version on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116888362191860771

The seventh article for this week is “Multiphase gas in Circumgalactic cloud complexes: Insights from kiloparsec-scale Magnetohydrodynamic Turbulence Simulations” by Rajsekhar Mohapatra (Princeton U., USA), Alankar Dutta (MPA Garching, Germany) and Prateek Sharma (Indian Institute of Science, Bangalore). This -paper was also published on Thursday 9th July, in the folder Astrophysics of Galaxies. This paper uses high-resolution simulations to investigate the mass distribution of the circumgalactic medium (CGM), a diffuse gas surrounding a galaxy’s halo with small-scale clumps of cold gas forming in quiescent regions.

The overlay for this one is here:

You can find the final accepted version of this one on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116888423374478219

The (penultimate) eighth article for this week is “Line-of-sight shear in SLACS strong lenses I: shear and mass model parametrisations” by Natalie B. Hogg (U. Cambridge, UK), Daniel Johnson (U. Montpellier, France), Anowar J. Shajib (U. Chicago, USA) and Julien Larena (Montpellier). This was also published on Thursday 9th July, but in the folder Cosmology and Nongalactic Astrophysics. This article studies models of 23 strong gravitational lenses to measure line-of-sight shear for the first time, providing potential new constraints on cosmological parameters.

The overlay for this one is here:

You can find the final accepted version on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116888620656683811

The ninth and last article for this week is “Current and future constraints on the expansion history of the GREA model” by Irene Graziotti (INAF-Osservatorio Astronomico di Capodimonte, Italy), Chiara De Leo (Sapienza University of Rome, Italy) and Matteo Martinelli (INAF-Osservatorio Astronomico di Roma, Italy). This study explores the General Relativistic Entropic Acceleration (GREA) framework, comparing it to the standard description of the universe. Current data favors the standard model, but GREA remains competitive.

The overlay for this one is here:

You can find the officially-accepted version on arXiv here and the Mastodon announcement here:

https://fediscience.org/@OJ_Astro/116894079326256820

As you can see, it has been a bumper week, especially when you consider that there was no arXiv mailing om Monday July 6th owing to the July 4th holiday in the USA. I should have known this would happen while I was travelling!

Weekly Update from the Open Journal of Astrophysics 04/07/2026

It’s Saturday again so it’s time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further seven papers, bringing the number in Volume 9 (2026) to 136 and the total so far published by OJAp up to 584.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Monday 29th June, is “Analysis and implications of the spatio-spectral morphology of the Fermi Bubbles” by Ami Tank (Indian Institute of Technology) and Roland Crocker & Mark R. Krumholz (Australian National University). Published in the folder High-Energy Astrophysical Phenomena, this paper presents an analysis of the gamma-ray structures of Fermi Bubbles in the Milky Way using a decade of data. The research suggests either hadronic or leptonic processes can explain the data.

The overlay for this paper is here

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/116831750056897536

The second paper for this week, also published on Monday 29th June, but in the folder Cosmology and Nongalactic Astrophysics, is “A first measurement of baryonic feedback with Fast Radio Bursts” by Robert Reischke (Universität Bonn, Germany) and Steffen Hagstotz (Ludwig-Maximilians Universität München, Germany). This paper argues that Fast Radio Bursts (FRBs) provide a new method to trace baryon distribution and feedback in the cosmos, offering insights into matter distribution and rejecting no-feedback scenarios with high confidence.

The overlay looks like this:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/116831826841996152

The third paper of the week, published on Tuesday 30th June in the folder High-Energy Astrophysical Phenomena, is “Idealized Global Models of Accretion Disks with Strong Toroidal Magnetic Fields” by Minghao Guo & Eliot Quataert (Princeton U., USA), Jonathan Squire (U. Otago, NZ), Philip F. Hopkins (Caltech, USA) and James M. Stone (Princeton). This study uses global magnetohydrodynamic simulations to explore the behavior of idealized accretion disks with strong toroidal magnetic fields, finding that these systems maintain a moderately strong mean azimuthal field.

The overlay for this one is here:

The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116837655082737919

The fourth paper of the week, published on Tuesday 30th June in the folder High-Energy Astrophysical Phenomena, is “On the effective spin-mass ratio relation of binary black hole mergers that evolved in isolation” by Sambaran Banerjee (Helmholtz-Instituts für Strahlen und Kernphysik, Germany) and Aleksandra Olejak (MPA Garching, Germany). This study explores mechanisms of binary black hole mergers and finds that certain spin and mass ratio trends can be naturally explained by isolated binary evolution. The overlay for this one is here:

You can read the final version of this one on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116837827227415689

The fifth paper of the week, also published on Tuesday 30th June but in the folder Solar and Stellar Astrophysics is “A systematic survey for hypervelocity runaways from thermonuclear supernovae” by Kareem El-Badry (Caltech, USA), and 18 others based in the USA, Germany, Austria and the UK. This paper presents a systematic survey of hypervelocity runaways, resulting from white dwarf explosions in binary systems. The findings suggest a diversity of remnant masses, ages, and heating mechanisms, challenging theoretical models.

The overlay for this one is here:

You can read the final version of this one on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116837896833204693

The sixth and penultimate paper of this week is “Boris and Exponential Integrators in the Theory of Particles Interacting with Magnetic Turbulence” by Andreas Shalchi (U. Manitoba, Canada). This was published on Wednesday 1st July, in the folder Solar and Stellar Astrophysics (it is posted in the plasma physics section of aXiv but cross-listed in solar and stellar astrophysics). The study compares the Rodrigues and Boris integrators in test-particle simulations of charged particles interacting with magnetic fields, finding both methods yield similar results.

The overlay for this one is here:

You can find the final accepted version on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116843121887902595

The seventh and final paper for this week is “Inflation at the End of 2025: Constraints on $r$ and $n_S$ using the Latest CMB and BAO Data” by Lennart Balkenhol (Institut d’Astrophysique de Paris, France) and 12 others based in France, Italy, Switzerland, UK, USA and Australia. This was also published on Wednesday 1st July, in the folder Cosmology and Nongalactic Astrophysics. This study presents constraints on parameters of inflationary models in cosmology, using the latest cosmic microwave background and baryon acoustic oscillation data. The findings help differentiate between inflation models.

The overlay for this one is here:

You can find the final accepted version of this one on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116843339514720727

And that concludes this week’s update. We’re starting to catch up on the backlog generated in June. At just past the halfway point of the year, which is where we are, we’re on 136 papers, which suggests a total around 272 for the year.

Weekly Update from the Open Journal of Astrophysics – 16/05/2026

It’s Saturday once again, so time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further five papers, bringing the number in Volume 9 (2026) to 104 and the total so far published by OJAp up to 552. It took us until late July to pass 100 last year.

I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter (which nobody should be using); these announcements also show the DOI for each paper.

The first paper to report this week, published on Monday 11th May in the folder High-Energy Astrophysical Phenomena is “Triaxial magnetars as sources of fast radio bursts” by Jonathan I Katz (Washington University, USA). This paper suggests that the mysterious properties of Fast Radio Bursts (FRB) could be explained by triaxial magnetars, with their activity levels influenced by precessional time scales.

The overlay for this paper is here

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/116554775791392800

The second paper for this week, published on Tuesday 12th May in the folder Astrophysics of Galaxies, is “The Abundance of Thin Dwarf Galaxies: a Challenge for Cosmological Simulations” by Jose Benavides & Laura V. Sales (UC Riverside, USA), Julio F. Navarro (U. Victoria, Canada), Simon D. M. White (MPA Garching, Germany), and Carlos S. Frenk, Kyle A. Oman & Shaun Cole (U. Durham, UK). Depending on mass up to 40% of galaxies are intrinsically flat, a fraction that numerical models of galaxy formation struggle to reproduce suggesting the models are incomplete.

The overlay for this one is here:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/116560106342500157

Next one up, the third paper of the week, also published on Tuesday 12th May but in the folder Cosmology and Nongalactic Astrophysics is “Cosmological peculiar velocities in general relativity” by Chris Clarkson (Queen Mary, University of London, UK) and Roy Maartens (U. Western Cape, South Africa). This paper refutes claims that the 1+3 covariant approach to cosmological perturbation theory predicts stronger growth of galaxy peculiar velocities, arguing that standard treatments are correct and fully relativistic.

The overlay for this one is here:

The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116560224426499932

The fourth paper this week, published on Wednesday May 13th “Possible evidence for a pair-instability supernova nature of ultra-early JWST sources” by Andrea Ferrara & Stefano Carniani (Scuola Normale Superiore, Pisa, Italy), Takahiro Morishita (California Institute of Technology, USA), and Massimo Stiavelli (Space Telescope Science Institute, USA). Published in the section Astrophysics of Galaxies. This paper argues that recent observations challenge early galaxy formation models, suggesting that the bright source, Capotauro, could be a supernova from a massive, metal-free star, not a luminous galaxy as initially thought.

The overlay is here:

The officially accepted version can be found on arXiv here and here is the Mastodon announcement:

https://fediscience.org/@OJ_Astro/116566147448743997

The fifth and final article of this week was also published on Wednesday 13th May but in the folder Cosmology and Nongalactic Astrophysics. The title is “Evolving and interacting dark energy: photometric and spectroscopic synergy with DES Y3 and DESI DR2” and it is by Maria Tsedrik and Benjamin Bose (University of Edinburgh, UK). The study investigates the Dark Scattering interacting dark energy scenario, using data from various sources. Results show no evidence of dark-sector interaction and a preference for the Chevallier-Polarski-Linder parametrisation.

The overlay is here:

You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:

https://fediscience.org/@OJ_Astro/116566165139100860

And that concludes this week’s update. I’ll do another next Saturday.

Weekly Update from the Open Journal of Astrophysics – 02/05/2026

Here we are, on schedule, with another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further seven papers, bringing the number in Volume 9 (2026) to 94 and the total so far published by OJAp up to 542. I checked the corresponding update for last year (on 3rd May 2025), and we’ve had an increase from 54 to 94 in papers published (about 74%) between the first four months of 2025 and the first four months of 2026.

I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter (which nobody should be using); these announcements also show the DOI for each paper.

The first paper to report this week is “DESI-DR1 3 × 2-pt analysis: consistent cosmology across weak lensing surveys” by Anna Porredon (CIEMAT, Madrid, Spain) and 72 others (DESI Colllaboration). This paper was published on Tuesday 28th April in the folder Cosmology and Nongalactic Astrophysics. This paper presents a joint cosmological analysis of galaxy clustering and gravitational lensing observations, providing consistent constraints on cosmological parameters. The analysis also introduces a new blinding procedure to prevent confirmation bias. See this post for news of an important DESI milestone.

The overlay for this paper is here

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/116480407578621011

The second paper for this week, also published on Tuesday 28th April but in the folder High-Energy Astrophysical Phenomena is “Masers and Broad-Line Mapping Favor Magnetically-Dominated AGN Accretion Disks” by Philip F. Hopkins (Caltech, USA), Dalya Baron (Stanford U., USA) and Joanna M. Piotrowska (Caltech). This one presents a new constraint on supermassive black hole accretion disks physics, suggesting that outer regions are likely in a ‘hyper-magnetized’ state, as thermal or radiation pressure models appear inconsistent.

The overlay for this one is here:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/116480505354195181

Next one up, the third paper of the week, is “Galaxy mergers and disk angular momentum evolution: stellar halos as a critical test” by Eric F. Bell (U. Michigan, Ann Arbor, USA), Richard D’Souza (Vatican Observatory), Monica Valluri & Katya Gozman (U. Michigan). This was published on Wednesday 29th April in the folder Astrophysics of Galaxies. The paper argues that satellite accretion impacts the angular momentum evolution of galaxies, often causing significant reorientation. This process is detectable in Milky Way-mass galaxies so the idea is testable observationally.

The overlay for this one is here:

The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116486649450860283

The fourth paper this week, published on Thursday April 30th, is “Time-Dilation Methods for Extreme Multiscale Timestepping Problems” by Philip F. Hopkins and Elias R. Most (Caltech, USA). This paper is in the folder Instrumentation and Methods for Astrophysics: it presents a new method for astrophysical simulations that modulates time evolution with a variable dilation/stretch factor, improving efficiency and accuracy in modeling processes across different scales.

The overlay is here:

The finally accepted version of this paper can be found here and the Mastodon announcement follows:

https://fediscience.org/@OJ_Astro/116492226856595031

The fifth article of this week was also published on Thursday 30th April, but in the folder Astrophysics of Galaxies. The title is “Cosmic Rays on Galaxy Scales: Progress and Pitfalls for CR-MHD Dynamical Models” and the author is Philip F. Hopkins (Caltech, USA) who has three papers featured this week. The paper presents an overview of cosmic ray (CR) modeling, highlighting its influence on galactic physics and star formation. It addresses previous modeling errors and presents new methods for full-spectrum dynamics.

The overlay is here:

You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:

https://fediscience.org/@OJ_Astro/116492282488422075

The sixth paper of the week is “Baryonification III: An accurate analytical model for the dispersion measure probability density function of fast radio bursts” by MohammadReza Torkamani (Universität Bonn, Germany) and 8 others based in Germany, Switzerland, UK and Sweden. This article was also published on Thursday April 30th in the folder Cosmology and Nongalactic Astrophysics. It presents a framework for predicting dispersion measures of fast radio bursts using the baryonification model, providing a cost-effective alternative to hydrodynamical simulations. The model’s accuracy is validated through full numerical simulations. The overlay is here:

You can find the officially-accepted version on arXiv here and the Mastodon announcement here:

https://fediscience.org/@OJ_Astro/116492403170125062

Seventh and finally for this week we have “The stellar and dark matter distributions in early-type galaxies measured by stacked weak gravitational lensing” by Momoka Fujikawa and Masamune Oguri (Chiba University, Japan). This study uses weak gravitational lensing to investigate stellar mass and dark matter density in red galaxies, suggesting a stronger feedback effect than current simulations predict. This was published on Friday 1st May 2026 in the folder Astrophysics of Galaxies. The overlay is here:

You can find the officially-accepted version on arXiv here and the Fediverse announcement is here:

https://fediscience.org/@OJ_Astro/116497987401632687

And that concludes this week’s update. I’ll do another one at the end of next week. Will Vol. 9 have reached a hundred by then?

P.S. Just a reminder that, thanks to the efforts of a member of our Editorial Board, the Open Journal of Astrophysics now has a Wikipedia page.

https://www.europesays.com/uk/929643/ Transforming deep-space signals into cathedral sound | MIT News #CanadianHydrogenIntensityMappingExperiment(CHIME) #EuropeanCapitalOfCulture #FastRadioBursts #Finland #KiyoshiMasui #MITKavliInstitute #OuluCathedral #Oulu2026 #Physics #Science #TheLogos #TurningCosmicRadioWavesIntoSound #UK #UnitedKingdom

https://www.europesays.com/ie/462346/ Transforming deep-space signals into cathedral sound | MIT News #CanadianHydrogenIntensityMappingExperiment(CHIME) #Éire #EuropeanCapitalOfCulture #FastRadioBursts #Finland #IE #Ireland #KiyoshiMasui #MITKavliInstitute #OuluCathedral #Oulu2026 #Physics #Science #TheLogos #TurningCosmicRadioWavesIntoSound

Magnetars in Binaries as the Engine of Actively Repeating #FastRadioBursts: https://iopscience.iop.org/article/10.3847/2041-8213/ae1023 -> A Unified Explanation for Fast Radio Bursts: https://aasnova.org/2025/12/10/a-unified-explanation-for-fast-radio-bursts/

Record Breaking Radio Signals (FRBs) and a Hyper Repeating Source - YouTube
https://www.youtube.com/watch?v=rreafQUpqQk

#Astronomy #Cosmology #FRB #FastRadioBursts

Weekly Update from the Open Journal of Astrophysics – 06/09/2025

It’s Saturday again, so it’s time for a summary of the week’s new papers at the Open Journal of Astrophysics. Since the last update we have published two new papers, which brings the number in Volume 8 (2025) up to 127, and the total so far published by OJAp up to 362. It’s been another relatively slow week, not least because of the Labor (sic) Day holiday in the USA on Monday which, among other things, meant there was no arXiv update on Tuesday.

Anyway, the first paper to report this week is “An analytical model for the dispersion measure of Fast Radio Burst host galaxies” by Robert Reischke, Michael Kovač & Andrina Nicola (U. Bonn, Germany), Steffen Hagstotz (Ludwig-Maximilians Universität München) and Aurel Schneider (U. Zurich, Switzlerland). This is a theoretical study of the dispersion measures (DMs) intrinsic to host galaxies of Fast Radio Burst (FRB) sources to enable separation of that from the line-of-sight DM. This one was published on Monday 1st September 2025 in the folder Cosmology and NonGalactic Astrophysics.

The overlay is here:

You can make this larger by clicking on it.  The officially accepted version of this paper can be found on the arXiv here.

The second paper this week, published on Wednesday 3rd Sepember in the folder Solar and Stellar Astrophysics, is “Complex spectral variability and hints of a luminous companion in the Be star + black hole binary candidate ALS 8814” by Kareem El-Badry (Caltech, USA), Matthias Fabry (Villanova U., USA), Hugues Sana (KU Leuven, Belgium), Tomer Shenar (Tel Aviv U., Israel) and Rhys Seeburger (MPA Heidelberg, Germany).

The overlay for this one is here:

You can find the officially accepted version on arXiv here.

And that’s all the papers for this week. It’s still a bit slow as we emerge from the summer vacations, we have a lot of papers in the pipeline that I expect to emerge pretty soon.

#arXiv241117682v2 #arXiv250901545v1 #BeStar #BlackHoleBinary #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #DispersionMeasures #fastRadioBursts #OpenJournalOfAstrophysics #SolarAndStellarAstrophysics #TheOpenJournalOfAstrophysics

Brightest fast radio burst ever detected could help solve an enduring cosmic mystery

Astronomers have spotted the brightest fast radio burst yet coming from a nearby galaxy. Observations of this phenomenon,…
#NewsBeep #News #Science #AmandaCook #burst #CA #Canada #Chime #Fastradiobursts #HarvardCollegeObservatory #Outriggers #PeterBlanchard #radiobursts #radiotelescope #radiowaves
https://www.newsbeep.com/ca/99642/

Astronomers Detect One of the Brightest, Closest FRBs Ever, And Track Its Exact Location

Fast Radio Bursts (FRBs) are like space’s version of a flash mob- super loud, super brief, and gone…
#NewsBeep #News #Science #CA #Canada #Fastradiobursts #Galaxy
https://www.newsbeep.com/ca/88392/

One of the Universe’s Biggest Mysteries Has Been Solved, Scientists Say
Scientists have spotted the universe’s “missing matter” hiding in a vast cosmic web with some help from #fastradiobursts from deep #space.
Now, a team has revealed that about 76% of all #baryons—the ordinary #particles that make up planets and stars—exist as gas hidden in the dark expanses between galaxies, known as the intergalactic medium.
https://www.404media.co/one-of-the-universes-biggest-mysteries-has-been-solved-scientists-say/

Weekly Update from the Open Journal of Astrophysics – 26/07/2025

It’s Saturday morning again, so it’s time again for an update of papers published at the Open Journal of Astrophysics. Since the last update we have published seven new papers, which brings the number in Volume 8 (2025) up to 105, and the total so far published by OJAp up to 340. I expect we’ll pass the century for this year sometime next week. I had expected a bit of a slowdown in July, but that doesn’t seem to have happened. Anyway, with the century for the year having been achieved, the next target is 120 (the total number we published last year). At the current rate I expect us to reach that sometime in August.

The papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Non-equilibrium ionization in the multiphase circumgalactic medium – impact on quasar absorption-line analyses” by Suyash Kumar and Hsiao-Wen Chen (University of Chicago, USA). This was published on Tuesday 22nd July 2025 in the folder Astrophysics of Galaxies. It discusses time-dependent photoionization (TDP) models that self-consistently solve for the ionization state of rapidly cooling gas irradiated by the extragalactic ultraviolet background (UVB) and the application thereof to observed systems.

The overlay is here:

The officially-accepted version can be found on arXiv here.

The second paper of the week, also published on Tuesday 22nd July but in the folder Cosmology and Nongalactic Astrophysics, is “Do We Know How to Model Reionization?” by Nick Gnedin (University of Chicago, USA). This paper discusses the similarities and differences between the radiation fields produced by different numerical simulations of cosmic reionization. The overlay is here:

You can find the officially accepted version of the paper on arXiv here.

The third paper of the week is “The effects of projection on measuring the splashback feature” by Xiaoqing Sun (MIT), Stephanie O’Neil (U. Penn.), Xuejian Shen (MIT) and Mark Vogelsberger (MIT), all based in the USA. This paper describes an investigation whether projection effects could lead to any systematic bias in determining the position of the boundary between infalling and accreting matter around haloes. It was published on Wednesday 23rd July in the folder Astrophysics of Galaxies. The overlay is here:

The officially-accepted version can be found on arXiv here.

The fourth paper of the week, also published on Wednesday 22nd July in the folder Astrophysics of Galaxies, is “Host galaxy identification of LOFAR sources in the Euclid Deep Field North” by Laura Bisigello, Marika Giulietti, Isabella Prandoni, Marco Bondi, & Matteo Bonato (INAF, Bologna, Italy), Manuela Magliocchetti (INAF-IAPS Roma, Italy), Huub Rottgering (Leiden Observatory, Netherlands), Leah, K. Morabito (Durham University, UK) and Glenn, J. White (Open Universirty, UK). This presents a catalogue of optical and near-infrared counterparts to radio sources detected in the Euclid Deep Field North using observations from the LOw-Frequency ARray (LOFAR). The overlay is here:

The final, accepted version of the paper is on arXiv here.

Fifth one up is “Constraining the dispersion measure redshift relation with simulation-based inference” by Koustav Konar (Ruhr University Bochum), Robert Reischke (Universität Bonn), Steffen Hagstotz (Ludwig-Maximilians Universität München), Andrina Nicola (Bonn) and Hendrik Hildebrandt (Bochum); all authors based in Germany. This was published on Thursday 24th July in the folder Cosmology and NonGalactic Astrophysics. It discusses using simulations to develop the use of Dispersion Measures of Fast Radio Bursts as cosmological probes. The overlay is here:

You can find the officially accepted version on arXiv here.

The penultimate (sixth) article published this week is “Generating Dark Matter Subhalo Populations Using Normalizing Flows” by Jack Lonergan (University of Southern California), Andrew Benson (Carnegie Observatories) and Daniel Gilman (University of Chicago), all based in the USA. This paper describes a generative AI approach to subhalo populations, trained using the semi-analytical model Galacticus. This paper was published yesterday (i.e. on Friday 25th July) in the folder Astrophysics of Galaxies.

You can find the final version on arXiv here.

The last article published this week is “21 Balmer Jump Street: The Nebular Continuum at High Redshift and Implications for the Bright Galaxy Problem, UV Continuum Slopes, and Early Stellar Populations” by Harley Katz of the University of Chicago, and 13 others based in the USA, UK, Germany, Denmark and Austria. This discusses the implications of extreme nebular emission for the spectroscopic properties of galaxies, especially at high redshift. It was published on Friday 25th July in the folder Astrophysics of Galaxies.

The overlay is here:

You can find the officially-accepted version on arXiv here.

And that’s all the papers for this week. I’ll do another update next Saturday, when we’ll be into August.

#arXiv241007084v2 #arXiv250113170v2 #arXiv250410571v2 #arXiv250415468v2 #arXiv250715963v1 #AstrophysicsOfGalaxies #CircumgalacticMedium #CosmicReionization #Cosmology #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #Euclid #EuclidDeepFieldNorth #fastRadioBursts #galaxyHaloes #generativeAI #LOFAR #NebularEmission #OpenJournalOfAstrophysics #subhaloes #TheOpenJournalOfAstrophysics #UltravioletSpectroscopy

Weekly Update from the Open Journal of Astrophysics – 20/06/2025

Yesterday (Thursday 19th June 2025) was a national holiday in the USA, which means that no new papers were announced on arXiv today (Friday 20th June). I have therefore decided to bring forwarded the usual weekly update of papers published at the Open Journal of Astrophysics by a day. Since the last update we have published three new papers, which brings the number in Volume 8 (2025) up to 74, and the total so far published by OJAp  is now up to 309.

The three papers published this week, with their overlays, are as follows. All three were published on Tuesday, June 17th 2025. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Illuminating the Physics of Dark Energy with the Discovery Simulations” by Gillian D. Beltz-Mohrmann (Argonne National Laboratory, USA) and 12 others based in the USA and Spain. This describes new high-resolution cosmological simulations providing a testbed for alternative cosmological probes that may offer additional constraining power beyond Baryon Accoustic Oscillations. It is filed in the folder marked Cosmology and NonGalactic Astrophysics.

The overlay is here:

You can read the final accepted version on arXiv here.

The second paper is in the folder marked Astrophysics of Galaxies. It is “LIGHTS. The extended point spread functions of the LIGHTS survey at the LBT” by Nafise Sedighi (Instituto de Astrofísica de Canarias, Spain) and 15 others based in Spain, USA, Iran, Italy and the UK. It describes the procedure used to construct the extended Point Spread Functions (PSFs) of the LIGHTS survey in images taken with the Large Binocular Cameras (LBCs) of the Large Binocular Telescope (LBT).

The overlay is here:

You can find the officially-accepted version of the paper on arXiv here.

Finally this week we have “Fast radio bursts as a probe of gravity on cosmological scales” by Dennis Neumann (Leiden University, Netherlands), Robert Reischke (Universität Bonn, Germany), Steffen Hagstotz (Ludwig-Maximilians Universität München, Germany) and Hendrik Hildebrandt (Ruhr University Bochum, Germany). This is about using dispersion measures derived from Fast Radio Bursts (FRBs) in combination with cosmic shear to investigate modified gravity theories, specifically Horndeski gravity. It is in the folder marked Cosmology and NonGalactic Astrophysics.

The overlay is here:

You can find the officially-accepted version on arXiv here.

That’s all the papers for this week. I’ll revert to the usual schedule for updates next week, and post the next one on Saturday 28th June.

#arXiv240911163v3 #arXiv241020190v2 #arXiv250305947v2 #AstrophysicsOfGalaxies #cosmicShear #Cosmology #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccessPublishing #DiscoverySimulations #fastRadioBursts #HorndeskiGravity #LargeBinocularTelescope #LIGHTSSurvey #OpenJournalOfAstrophysics #PointSpreadFunction #TheOpenJournalOfAstrophysics

Mysterious fast radio bursts illuminate ‘missing’ cosmic matter | CNN

https://www.cnn.com/2025/06/16/science/fast-radio-bursts-missing-matter

This is not a about #darkmatter, the 85% of the universe's total matter. Rather, this is about confirming that a great deal of ORDINARY matter is spread thinly as gas in the spaces around and between galaxies. Fast radio burst signals have been used to provide evidence that this is, in fact, the case.

https://www.nature.com/articles/s41550-025-02566-y

#MissingBaryons #FastRadioBursts #Astronomy

First results obtained by the k’niPatn k’l⌣ stk’masqt outrigger (KKO) telescope

https://doi.org/10.3847/2041-8213/ad9ddc

KKO is located on the traditional territory of the Similamix People in British Columbia. The Upper Similkameen Indian Band offered the name, which means “a listening device for outer space”.

More insights on this project: https://arxiv.org/abs/2402.07898

#astronomy #Astrophysics #astrodon #CHIME #KKO #radiotelescope #Similamix #BritishColumbia #Similkameen #cosmology #FRB #FastRadioBursts

#FastRadioBursts originate near the surface of stars
Rare burst indicates #FRB likely originate near the star and that they share a feature with emissions of #pulsars, another subtype of #neutronstar.
Data regarding #FRB20221022A seem pretty clear, Key question is whether this particular FRB tells us much about all other FRBs observed, including those from repeating sources. It remains entirely possible more than one type of event produces something that looks like an FRB
https://arstechnica.com/science/2025/01/new-findings-get-us-closer-to-knowing-what-causes-radio-bursts/

Using the Westerbork radio telescope, astronomers have discovered two dozen of the unexplained Fast Radio Bursts and discovered their origins!

https://youtu.be/cB_9s7vUVFY?si=5ss2B_8QtNCS6S2p

#Science #FastRadioBursts #Astronomy #ASTRON #JoerivanLeeuwen

Have you seen this great new discovery on the origin of fast radio bursts?
https://news.mit.edu/2025/mit-scientists-pin-down-origins-fast-radio-burst-0101
Cordial congrats to Kenzie & friends!! 💥

#astronomy #astrophysics #FastRadioBursts

Major FRB Updates: Possible Sources of Mystery Radio Signals - YouTube
https://www.youtube.com/watch?v=zkoHhTHn-g0

#Astronomy #Cosmology #FastRadioBursts

🌌 A new study led by astronomer Kritti Sharma reveals that fast radio bursts (FRBs) are more likely from galaxies with younger star populations—but these galaxies are unusually large and rare.

FRBs are brief, intense radio bursts traveling millions to billions of light-years. Though we’ve ruled out aliens, there’s much to learn about these enigmatic cosmic phenomena.

@goodnews

#FastRadioBursts #Astronomy #SpaceMystery #ScienceNews #GoodNews
https://www.sciencealert.com/the-mysterious-origins-of-fast-radio-bursts-may-finally-be-identified

Scientists tune into wild origins of #fastradiobursts
FRBs are millisecond-duration events detected from within and beyond the Milky Way. Within our own galaxy, evidence suggests FRBs come from a rare type of neutron #star called a #magnetar. Like other neutron stars, magnetars are extremely dense – they might be 12mi across but possess a mass about 1.4 times that of Sun – and they also have magnetic fields hundreds of millions of times stronger than human-made magnets.
https://www.theregister.com/2024/11/07/fast_radio_burst_research/

Once again, it’s time for a quick update of activity at the Open Journal of Astrophysics. This week we have published another batch of four papers which takes the count in Volume 7 (2024) up to 77 and the total published altogether by OJAp up to 192. Things are picking up again after the summer lull, and we’re moving towards a double century. If we keep up a steady average of four per week we’ll be at 200 per year.

In chronological order, the four papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

First one up is “Quasi-two-dimensionality of three-dimensional, magnetically dominated, decaying turbulence” by Shreya Dwivedi, Chandranathan Anandavijayan, and Pallavi Bhat of TIFR, Bangalore, India. The paper presents an analysis of numerical simulations of MHD turbulence using Minkowski Functionals, with implications for local anisotropies revealed therein. It was published on 9th September 2024 and is in the folder marked High-Energy Astrophysical Phenomena.

Here is a screen grab of the overlay, which includes the abstract:

You can find the officially accepted version of the paper on the arXiv here.

The second paper to announce, also published on 9th September 2024, is “mochi_class: Modelling Optimisation to Compute Horndeski In class” by  Matteo Cataneo (Universität Bonn, Germany) and Emilio Bellini (SISSA, Trieste, Italy). This article presents a cosmological Einstein-Boltzmann solver adapted to work with Horndeski gravity, together with validation tests. It is in the folder Cosmology and NonGalactic Astrophysics.

You can see the overlay here:

The accepted version of this paper can be found on the arXiv here.

The third paper, published on 11th September 2024 in the folder marked High-Energy Astrophysical Phenomena, is by Jonathan Katz of Washington University, St Louis, USA. The title is “The Sources of Fast Radio Bursts” and it presents a discussion of the possible physical origin of Fast Radio Bursts, arguing that they fall into two distinct groups.

The final version accepted on arXiv is here.

Last in this batch, but by no means least, is “RMS asymmetry: a robust metric of galaxy shapes in images with varied depth and resolution” by Elizaveta Sazonova (U. Waterloo, Canada) with 15 other authors spread around the world (in Canada, USA, Australia, Italy, Chile, UK, Poland, Mexico, Germany, and Spain). This paper presents a method of quantifying distortion of galaxy images connected with mergers or other instabilities. It is in the folder marked Astrophysics of Galaxies and was published on September 12th 2024 with this overlay:

You can find the official accepted version on the arXiv here.

That’s all for now. I will post another update in a week.

https://telescoper.blog/2024/09/14/four-new-publications-at-the-open-journal-of-astrophysics-7/

#arXiv220713241v4 #arXiv240101965v2 #arXiv240405792v2 #arXiv240711968v2 #AstrophysicsOfGalaxies #CosmologyAndNonGalacticAstrophysics #EinsteinBoltzmannEquations #fastRadioBursts #galaxies #galaxyMergers #GalaxyShapes #HighEnergyAstrophysicalPhenomena #HorndeskiGravity #magnetohydrodynamics #MHD #MinkowskiFunctionals #OpenJournalOfAstrophysics #PlasmaPhysics #plasmaTurbulence #TheOpenJournalOfAstrophysics

#astronomy #FastRadioBursts #VLA

An article published in the journal "Nature" reports the results of a study on some fast radio bursts linked to persistent emissions that associates that long duration with a bubble of plasma that generates that radiation. A team of researchers registered and studied the fast radio burst with the weakest persistent emission detected so far, cataloged as FRB20201124A, and two other similar events with the VLA radio telescope.

https://english.tachyonbeam.com/2024/08/09/a-confirmation-of-the-origin-of-persistent-emissions-linked-to-some-fast-radio-bursts/

Polarized light yields fresh insight into mysterious #fastradiobursts
Events we've been lumping together as #FRB could actually be the product of two different events. The repeating events occur in the environment around a #magnetar. The one-shot events are triggered by the death of a highly magnetized #neutronstar within a few hours of its formation. #Astronomers announced the detection of a possible #blitzar potentially associated with an FRB last year.
https://arstechnica.com/science/2024/06/polarized-light-yields-fresh-insight-into-mysterious-fast-radio-bursts/

Radio signal from space repeats every hour
So is behind such a weird radio signal? Let’s get it out of way up front: it’s not aliens. Most likely explanation, according to the scientists who discovered it, is that it’s coming from a neutron star or a white dwarf.
"It might even prompt us to reconsider our decades-old understanding of neutron stars or white dwarfs; how they emit radio waves and what their populations are like in our Milky Way galaxy."
https://newatlas.com/space/radio-signal-space-repeats-hour-neutron-star-white-dwarf/
#fastradiobursts

Polarization Properties of 128 Nonrepeating #FastRadioBursts from the First CHIME/FRB Baseband Catalog: https://iopscience.iop.org/article/10.3847/1538-4357/ad40aa -> Study detailing the properties of polarized light from 128 non-repeating FRBs reveals mysterious cosmic explosions originate in far-away galaxies like our own Milky Way: https://www.eurekalert.org/news-releases/1047594 -> Polarized light yields fresh insight into mysterious fast radio bursts: https://arstechnica.com/science/2024/06/polarized-light-yields-fresh-insight-into-mysterious-fast-radio-bursts/

Fast Radio Bursts (FRBs) are millisecond duration bursts of radio waves that travel across the Universe - and to date, we still are unsure what causes them (though, we have theories).

They were discovered in 2007 when looking for archival data collected by Parkes 📡

The three senior science authors who led the discovery, Duncan Lorima, Maura McLaughlin and Matthew Bailes have now published an overview of FRBs, and its great!

So nice to see undergrad student Ash Narkevic credited with their role in this huge discovery in science too!

Whilst we don't know what causes FRBs, we can use them as probes to 'weigh' the Universe with them! Wrote about this here: https://www.spaceaustralia.com/index.php/feature/we-found-it-fast-radio-bursts-shed-light-missing-matter

Read the FRB review article (Lorimer, McLaughlin, Bailes) here: https://link.springer.com/article/10.1007/s10509-024-04322-6

📸 Lorimer et al. 2024 / J-P Macquart

#SpaceAustralia #FastRadioBursts #RadioAstronomy #Astrophysics #Astrodon

Polarized light yields fresh insight into mysterious fast radio bursts - Enlarge / Artist’s rendition of how the angle of polarized light from a... - https://arstechnica.com/?p=2030151 #fastradiobursts #astrophysics #astronomy #science #physics #chime

Finally, an upgrade to ASKAP to be better at detecting Fast Radio Bursts
#ATRASC2024 #URSI #ATNF #ASKAP #CSIRO #CRACO #FRB #FastRadioBursts

Inside quest to map the universe with mysterious bursts of radio energy
#Astronomers still don’t know what causes #fastradiobursts, but they’re starting to use them to illuminate the #space between #galaxies. They flash in random and unpredictable patterns from all over the sky. Some appear from within our #galaxy, others from previously unexamined depths of universe. Some repeat in patterns for days and then vanish; others have been repeating every few days since found. https://www.technologyreview.com/2024/05/01/1091934/inside-the-quest-to-map-the-universe-with-mysterious-bursts-of-radio-energy/

https://scitechdaily.com/cosmic-whispers-unveiled-scientists-unlock-new-secrets-of-mysterious-fast-radio-bursts/
Cosmic Whispers Unveiled: Scientists Unlock New Secrets of Mysterious Fast Radio Bursts

This research demonstrates that innovative telescopes with unique capabilities, such as the ATA, offer fresh perspectives on unresolved enigmas in the field of FRB science.

#science #scicomm #fastradiobursts #frbs

#xkcd: #FastRadioBursts

https://xkcd.com/2886/

Mysterious, powerful radio blasts coming from ‘blob’ in space, scientists say
https://www.msn.com/en-gb/news/world/mysterious-powerful-radio-blasts-coming-from-blob-in-space-scientists-say/ar-AA1mHX8s?cvid=342a666d7d5541e0fbf88bbe143e653a&ocid=winp2fptaskbarhover&ei=9

#RadioSignals
#Blob
#FastRadioBursts
#FRBs

NASA boosts far-out radio dishes and other wild ideas
A proposal to build a far-flung set of radio antennas to measure the cosmos is one of 13 far-out concepts to receive seed funding from the NASA Innovative Advanced Concepts program.

University of Washington astronomer Matthew McQuinn will receive a grant of $175,000 to fl
https://cosmiclog.com/2024/01/04/nasa-boosts-far-out-radio-dishes-and-other-wild-ideas/
#GeekWire #Astronomy #FastRadioBursts #NASA #Space #UniversityOfWashington

Mysterious New Signals Detected by #SETI: Unlocking the Strange Puzzle of #FastRadioBursts
Using a "recently refurbished" #telescope array, SETI scientists performed 541 hours of additional observations — and found 35 new "Fast Radio Bursts" (or #FRB). All 35 FRBs were found in the lower part of the frequency spectrum, each with its unique energy signature. No clear pattern was found, highlighting the unpredictability of these celestial phenomena.
https://scitechdaily.com/mysterious-new-signals-detected-by-seti-unlocking-the-strange-puzzle-of-fast-radio-bursts/

A link between repeating and non-repeating #FastRadioBursts through their energy distributions: https://www.nature.com/articles/s41550-023-02153-z -> Telescope quartet reveals surprising statistics of cosmic flashes: https://www.astron.nl/telescope-quartet-reveals-surprising-statistics-of-cosmic-flashes/

Faster-than-fast blasts from the past

Beautiful cover for the latest issue of the Nature Astronomy Journal, featuring an illustration of the Green Bank Telescope capturing the signal from a Fast Radio Burst.

https://www.nature.com/natastron/volumes/7/issues/12

Image: Futselaar/ASTRON/NSF/NRAO/GBO. Cover design: Bethany Vukomanovic.

#nature #astronomy #natureastronomy #cover #covers #art #coverart #astronomy #astrophysics #astrodon #greenbank #telescope #gbt #radiotelescope #frb #fastradiobursts #space #science #research

Very NEAT new science, with the discovery of the most ancient and distant FRB, localised (by ASKAP) at redshift 1 (~eight billion years old!).

Lots of Aussie scientists on this, incl. Stuart Ryder and Lachlan Marnoch from our Uni.

https://www.science.org/doi/10.1126/science.adf2678

📸 ESO/M. Kornmesser

#Astrodon #RadioAstronomy #FastRadioBursts #Astrophysics #Science

Fast radio bursts trigger aftershocks resembling earthquakes, but not solar flares: https://academic.oup.com/mnras/article/526/2/2795/7295484?login=false -> Mysterious #FastRadioBursts might be caused by “starquakes,” study finds: https://arstechnica.com/science/2023/10/could-starquakes-be-a-source-of-mysterious-fast-radio-bursts/

Ars Technica: Mysterious fast radio bursts look a lot like earthquakes, study finds https://arstechnica.com/?p=1974943 #Tech #arstechnica #IT #Technology #fastradiobursts #astrophysics #neutronstars #astronomy #magnetars #Science

Mysterious fast radio bursts look a lot like earthquakes, study finds - Enlarge / Artist's impression of a fast radio burst (FRB) traveling thr... - https://arstechnica.com/?p=1974943 #fastradiobursts #astrophysics #neutronstars #astronomy #magnetars #science

A radio pulsar phase from SGR J1935+2154 provides clues to the magnetar #FRB mechanism: https://www.science.org/doi/10.1126/sciadv.adf6198 -> Astronomers Shed New Light on Formation of Mysterious #FastRadioBursts: https://www.unlv.edu/news/release/astronomers-shed-new-light-formation-mysterious-fast-radio-bursts - international team reports on a radio #pulsar phase of a Galactic magnetar that emitted a fast radio burst in 2020; observations suggest unique origins for “bursts” and “pulses," which adds to FRB formation theory.