#activegalacticnuclei — Public Fediverse posts

New in the #VirtualObservatory: “Supermassive BH with accretion rates in AGN. XIV.” by Hu C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/278/61
#Redshifted #Spectroscopy #Quasars #ActiveGalacticNuclei

New in the #VirtualObservatory: “SEAMBH in AGNs. XIII. Mrk142 GMOS and LJT spectra” by Khatu V.C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/958/127
#Spectroscopy #ActiveGalacticNuclei #VisibleAstronomy

New in the #VirtualObservatory: “CL-AGN from the DESI. II. Stat. properties from DR1” by Guo W.-J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/278/28
#ActiveGalacticNuclei #Spectroscopy #Redshifted #VisibleAstronomy

New in the #VirtualObservatory: “3C 84 jet images” by Paraschos G.F. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/709/A92
#Interferometry #Polarimetry #ActiveGalacticNuclei

New in the #VirtualObservatory: “Extended cluster radio sources catalog” by van der Jagt S. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/699/A66
#Redshifted #ActiveGalacticNuclei #RadioGalaxies #GalaxyClusters

New in the #VirtualObservatory: “Kilioparsec morphology OIII catalog” by Escott E.L. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/547/G274
#Quasars #InfraredAstronomy #RadioSources #ActiveGalacticNuclei

New in the #VirtualObservatory: “IceCube neutrinos-CAZ blazar light curves assoc.” by Kouch P.M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/708/A383
#NeutrinoAstronomy #ActiveGalacticNuclei #RadioSources

New in the #VirtualObservatory: “7918 blazar-selected AGN CAZ catalog and LC” by Kouch P.M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/708/A382
#VisibleAstronomy #RadioSources #Quasars #ActiveGalacticNuclei

New in the #VirtualObservatory: “EMU/GAMA. AGN diagnostics” by Prathap J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/PASA/43.47
#ActiveGalacticNuclei #RadioSources

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.

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.

New in the #VirtualObservatory: “Redshift and reddening of 125 QSOs behind M31” by Nedialkov P. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/708/A20
#Spectroscopy #ActiveGalacticNuclei #Photometry #Quasars

New in the #VirtualObservatory: “Compilation of optical tidal disruption events” by Langis D.A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A171
#XRaySources #Accretion #BlackHoles #ActiveGalacticNuclei

New in the #VirtualObservatory: “eJWST AGN observation catalogue” by Lenk V. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A110
#InfraredAstronomy #Redshifted #VisibleAstronomy #ActiveGalacticNuclei

New in the #VirtualObservatory: “5 AGNs soft excess and X-ray continuum” by Jana A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A213
#XRaySources #ActiveGalacticNuclei #Accretion

New in the #VirtualObservatory: “AGN multiwavelength SED in POX 52” by Kawamuro T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/960/15
#ActiveGalacticNuclei #SpectralEnergyDistribution #XRaySources #InfraredPhotometry

New in the #VirtualObservatory: “Bar morphologies of HSC-SSP disc galaxies” by La Marca A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A152
#InteractingGalaxies #ActiveGalacticNuclei #Astrometry #InfraredPhotometry

New in the #VirtualObservatory: “NGC 1068 vel.-int. intensities and luminosities” by Lin S. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A20
#ActiveGalacticNuclei #InterstellarMedium #MillimeterAstronomy #SubmillimeterAstronomy

New in the #VirtualObservatory: “The HETEDEX AGN catalog 4th data release (HDR4)” by Liu C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/276/72
#Spectroscopy #ActiveGalacticNuclei #VisibleAstronomy #Surveys

New in the #VirtualObservatory: “Fairall 9 ubvyI light curves” by Mandal A.K. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/706/A176
#ActiveGalacticNuclei #VisibleAstronomy #SloanPhotometry #Quasars

New in the #VirtualObservatory: “eRASS Hard X-ray selected AGNs” by Waddell S.G.H. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/706/A144
#ActiveGalacticNuclei #XRaySources

New in the #VirtualObservatory: “Custom ZTF photometry for classification” by Arevalo P. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/705/A247
#ActiveGalacticNuclei #VisibleAstronomy

New in the #VirtualObservatory: “Signatures of AGN outflows in X-rays” by Laurenti M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/705/A240
#GammaRayAstronomy #ActiveGalacticNuclei #XRaySources

'There's Been a Merger!' - Taggart (allegedly) - podcast 30m30s #Euclid #BlackHoles #ActiveGalacticNuclei #SETI #SETILive https://e291bb65-fce0-4adb-8009-ecc15386b126.libsyn.com/when-galaxies-collide-euclid-reveals-what-triggers-active-black-holes

'There's Been a Merger!' - Taggart (allegedly) - podcast 30m30s #Euclid #BlackHoles #ActiveGalacticNuclei #SETI #SETILive https://e291bb65-fce0-4adb-8009-ecc15386b126.libsyn.com/when-galaxies-collide-euclid-reveals-what-triggers-active-black-holes

'There's Been a Merger!' - Taggart (allegedly) - podcast 30m30s #Euclid #BlackHoles #ActiveGalacticNuclei #SETI #SETILive https://e291bb65-fce0-4adb-8009-ecc15386b126.libsyn.com/when-galaxies-collide-euclid-reveals-what-triggers-active-black-holes

'There's Been a Merger!' - Taggart (allegedly) - podcast 30m30s #Euclid #BlackHoles #ActiveGalacticNuclei #SETI #SETILive https://e291bb65-fce0-4adb-8009-ecc15386b126.libsyn.com/when-galaxies-collide-euclid-reveals-what-triggers-active-black-holes

'There's Been a Merger!' - Taggart (allegedly) - podcast 30m30s #Euclid #BlackHoles #ActiveGalacticNuclei #SETI #SETILive https://e291bb65-fce0-4adb-8009-ecc15386b126.libsyn.com/when-galaxies-collide-euclid-reveals-what-triggers-active-black-holes

New in the #VirtualObservatory: “Green Chile Cat: Extended nebulae SDSS photometry” by Dijeau A.F. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/207
#Galaxies #Photometry #VisibleAstronomy #ActiveGalacticNuclei

New in the #VirtualObservatory: “Images of 0954+556 at multi-frequency” by Zeng A.-L. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/705/A85
#RadioContinuumEmission #ActiveGalacticNuclei #MagneticFields #Polarimetry

New in the #VirtualObservatory: “Properties of type 1 AGNs” by Yoon Y. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/704/A211
#Quasars #VisibleAstronomy #ActiveGalacticNuclei #Redshifted

New in the #VirtualObservatory: “ALMA obs. of HCN and HCO+ for 12 (U)LIRGs” by Imanishi M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/954/148
#Galaxies #MillimeterAstronomy #ActiveGalacticNuclei #Redshifted

New in the #VirtualObservatory: “AGN inflow and outflow in the Circinus galaxy” by Goesaert W.M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/704/A125
#ActiveGalacticNuclei #MillimeterAstronomy #SubmillimeterAstronomy #Galaxies

New in the #VirtualObservatory: “Bright gamma-ray blazars among the 4LAC” by Yoshida K. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/954/194
#NeutrinoAstronomy #VisibleAstronomy #GammaRayAstronomy #ActiveGalacticNuclei

New in the #VirtualObservatory: “Variability of active galaxies. I.” by Lefkir M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/544/3260
#GammaRayAstronomy #StellarMasses #ActiveGalacticNuclei #XRaySources

New in the #VirtualObservatory: “Comprehensive radio study of NLS1s” by Varglund I. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/703/A202
#ActiveGalacticNuclei #RadioSources

New in the #VirtualObservatory: “ASKAP radio in GAMA galaxies at 0.42 < z < 1.00” by Su R. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/516/2947
#Galaxies #RadioSources #RadioContinuumEmission #ActiveGalacticNuclei

New in the #VirtualObservatory: “5 orphaned AGNs HST/FOC UV imaging polarimetry” by Barnouin T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A96
#SeyfertGalaxies #ActiveGalacticNuclei #UltravioletAstronomy #Polarimetry

New in the #VirtualObservatory: “5 orphaned AGNs HST/FOC UV imaging polarimetry” by Barnouin T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A96
#SeyfertGalaxies #ActiveGalacticNuclei #UltravioletAstronomy #Polarimetry

New in the #VirtualObservatory: “5 orphaned AGNs HST/FOC UV imaging polarimetry” by Barnouin T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A96
#SeyfertGalaxies #ActiveGalacticNuclei #UltravioletAstronomy #Polarimetry

New in the #VirtualObservatory: “5 orphaned AGNs HST/FOC UV imaging polarimetry” by Barnouin T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A96
#SeyfertGalaxies #ActiveGalacticNuclei #UltravioletAstronomy #Polarimetry

New in the #VirtualObservatory: “5 orphaned AGNs HST/FOC UV imaging polarimetry” by Barnouin T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A96
#SeyfertGalaxies #ActiveGalacticNuclei #UltravioletAstronomy #Polarimetry

New in the #VirtualObservatory: “Optical variability of ~700 low mass AGNs” by Burke C.J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/516/2736
#Redshifted #DwarfGalaxies #ActiveGalacticNuclei #Astrometry

New in the #VirtualObservatory: “Submillimeter light curves of 7 low-luminosity AGNs” by Chen B.-Y. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/951/93
#MillimeterAstronomy #Photometry #SubmillimeterAstronomy #ActiveGalacticNuclei

New in the #VirtualObservatory: “Photoionization models” by Peluso G. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/701/A29
#AstronomicalModels #ActiveGalacticNuclei #ChemicalAbundances

New in the #VirtualObservatory: “GCN VOEvent Streams From Fermi-LAT” by The Fermi LAT Team
http://dc.g-vo.org/std/gcn-fermi-lat/fermi-lat/info
#ActiveGalacticNuclei #TimeDomainAstronomy #GammaRayBursts #GammaRayAstronomy

New in the #VirtualObservatory: “High energy multimessenger blazar PKS 1424+240” by Kovalev Y.Y. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/700/L12
#RadioContinuumEmission #VeryLongBaselineInterferometry #ActiveGalacticNuclei #RadioGalaxies

Weekly Update at the Open Journal of Astrophysics – 08/03/2025

Time for the weekly Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published four new papers, which brings the number in Volume 8 (2025) up to 25 and the total so far published by OJAp up to 260.

In chronological order of publication, 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.

The first paper to report is “Partition function approach to non-Gaussian likelihoods: information theory and state variables for Bayesian inference” by Rebecca Maria Kuntz, Heinrich von Campe, Tobias Röspel, Maximilian Philipp Herzog, and Björn Malte Schäfer, all from the University of Heidelberg (Germany). It was published on Wednesday March 5th 2025 in the folder Cosmology and NonGalactic Astrophysics and it discusses the relationship between information theory and thermodynamics with applications to Bayesian inference in the context of cosmological data sets.

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

The second paper of the week  is “The Cosmological Population of Gamma-Ray Bursts from the Disks of Active Galactic Nuclei” by Hoyoung D. Kang & Rosalba Perna (Stony Brook), Davide Lazzati (Oregon State), and Yi-Han Wang (U. Nevada), all based in the USA. It was published on Thursday 6th March 2025 in the folder High-Energy Astrophysical Phenomena. The authors use models for GRB electromagnetic emission to simulate the cosmological occurrence and observational detectability of both long and short GRBs within AGN disks

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

The next two papers were published on Friday 7th March 2025.

“The distribution of misalignment angles in multipolar planetary nebulae” by Ido Avitan and Noam Soker (Technion, Haifa, Israel) analyzes the statistics of measured misalignment angles in multipolar planetary nebulae implies a random three-dimensional angle distribution limited to <60 degrees. It is in the folder Solar and Stellar Astrophysics.

Here is the overlay:

The official published version can be found on the arXiv here.

The last paper to report this week is “The DESI-Lensing Mock Challenge: large-scale cosmological analysis of 3×2-pt statistics” by Chris Blake (Swinburne, Australia) and 43 others; this is a large international collaboration and I apologize for not being able to list all the authors here!

This one is in the folder marked Cosmology and NonGalactic Astrophysics; it presents an end-to-end simulation study designed to test the analysis pipeline for the Dark Energy Spectroscopic Instrument (DESI) Year 1 galaxy redshift dataset combined with weak gravitational lensing from other surveys.

The overlay is here:

You can find the “final” version on arXiv here.

That’s all for this week. It’s good to see such an interesting variety of topics. I’ll do another update next Saturday

#3x2ptAnalysis #ActiveGalacticNuclei #arXiv241113625v2 #arXiv241212548v2 #arXiv241217714v2 #arXiv250104549v2 #BayesianInference #Cosmology #CosmologyAndNonGalacticAstrophysics #DESI #DiamondOpenAccess #DiamondOpenAccessPublishing #entropy #GammaRayBursts #HighEnergyAstrophysicalPhenomena #InformationTheory #numericalSimulations #planetaryNebulae #SolarAndStellarAstrophysics #StatisticalMechanics #WeakLensing

Weekly Update at the Open Journal of Astrophysics – 08/03/2025

Time for the weekly Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published four new papers, which brings the number in Volume 8 (2025) up to 25 and the total so far published by OJAp up to 260.

In chronological order of publication, 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.

The first paper to report is “Partition function approach to non-Gaussian likelihoods: information theory and state variables for Bayesian inference” by Rebecca Maria Kuntz, Heinrich von Campe, Tobias Röspel, Maximilian Philipp Herzog, and Björn Malte Schäfer, all from the University of Heidelberg (Germany). It was published on Wednesday March 5th 2025 in the folder Cosmology and NonGalactic Astrophysics and it discusses the relationship between information theory and thermodynamics with applications to Bayesian inference in the context of cosmological data sets.

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

The second paper of the week  is “The Cosmological Population of Gamma-Ray Bursts from the Disks of Active Galactic Nuclei” by Hoyoung D. Kang & Rosalba Perna (Stony Brook), Davide Lazzati (Oregon State), and Yi-Han Wang (U. Nevada), all based in the USA. It was published on Thursday 6th March 2025 in the folder High-Energy Astrophysical Phenomena. The authors use models for GRB electromagnetic emission to simulate the cosmological occurrence and observational detectability of both long and short GRBs within AGN disks

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

The next two papers were published on Friday 7th March 2025.

“The distribution of misalignment angles in multipolar planetary nebulae” by Ido Avitan and Noam Soker (Technion, Haifa, Israel) analyzes the statistics of measured misalignment angles in multipolar planetary nebulae implies a random three-dimensional angle distribution limited to <60 degrees. It is in the folder Solar and Stellar Astrophysics.

Here is the overlay:

The official published version can be found on the arXiv here.

The last paper to report this week is “The DESI-Lensing Mock Challenge: large-scale cosmological analysis of 3×2-pt statistics” by Chris Blake (Swinburne, Australia) and 43 others; this is a large international collaboration and I apologize for not being able to list all the authors here!

This one is in the folder marked Cosmology and NonGalactic Astrophysics; it presents an end-to-end simulation study designed to test the analysis pipeline for the Dark Energy Spectroscopic Instrument (DESI) Year 1 galaxy redshift dataset combined with weak gravitational lensing from other surveys.

The overlay is here:

You can find the “final” version on arXiv here.

That’s all for this week. It’s good to see such an interesting variety of topics. I’ll do another update next Saturday

#3x2ptAnalysis #ActiveGalacticNuclei #arXiv241113625v2 #arXiv241212548v2 #arXiv241217714v2 #arXiv250104549v2 #BayesianInference #Cosmology #CosmologyAndNonGalacticAstrophysics #DESI #DiamondOpenAccess #DiamondOpenAccessPublishing #entropy #GammaRayBursts #HighEnergyAstrophysicalPhenomena #InformationTheory #numericalSimulations #planetaryNebulae #SolarAndStellarAstrophysics #StatisticalMechanics #WeakLensing

Weekly Update from the Open Journal of Astrophysics – 08/02/2025

It’s Saturday morning, so once again it’s time for an update from the Open Journal of Astrophysics. Since the last update we have published one new paper, which brings the number in Volume 8 (2025) up to 12 and the total so far published by OJAp up to 247.

“Galaxy evolution in the post-merger regime. III – The triggering of active galactic nuclei peaks immediately after coalescence” was written by Sara Ellison, Leonardo Ferreira, Robert Bickley & Tess Grindlay (U. Victoria, Canada), Samir Salim (Indiana U., USA), Shoshannah Byrne-Mamahit (Victoria), Shobita Satyapal (George Mason U., USA), David R. Patton (Trent U., Canada) and Jillian M. Scudder (Oberlin College, USA).  It was published on 4th February 2025 and is in the folder marked Astrophysics of Galaxies. The paper describes an investigation into the timescale of triggering of AGN activity after galaxy mergers and concluding that most occurs immediately after coalescence. 

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

That’s all for this week. I’ll have more updates next Saturday.

#ActiveGalacticNuclei #AGN #arXiv241202804v2 #AstrophysicsOfGalaxies #DiamondOpenAccess #galaxyMergers #OJAp #OpenAccessPublishing_