The Open Journal of Astrophysics
@ojastro.bsky.social
A peer-reviewed Diamond Open-Access Astrophysics journal using an arXiv overlay. This community-run service is provided entirely free for authors and readers.
https://astro.theoj.org/
https://astro.theoj.org/
New Publication at the Open Journal of Astrophysics: "Beyond No No Tension: JWST z > 10 Galaxies Push Simulations to the Limit" by Joe McCaffrey (NUI Maynooth, Ireland), Samantha Hardin and John Wise (Georgia Institute of Technology, USA) and John Regan (Maynooth)
doi.org/10.33232/001...
doi.org/10.33232/001...
Beyond No No Tension: JWST z > 10 Galaxies Push Simulations to the Limit | Published in The Open Journal of Astrophysics
By Joe McCaffrey, Samantha Hardin & 2 more. Asking the question whether newly-discovered high redshift galaxies are consistent with simulations of galaxy formation
doi.org
November 14, 2025 at 9:02 AM
New Publication at the Open Journal of Astrophysics: "Beyond No No Tension: JWST z > 10 Galaxies Push Simulations to the Limit" by Joe McCaffrey (NUI Maynooth, Ireland), Samantha Hardin and John Wise (Georgia Institute of Technology, USA) and John Regan (Maynooth)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Witnessing downsizing in the making: quiescent and breathing galaxies at the dawn of the Universe" by Emiliano Merlin (Osservatorio Astronomico di Roma, Italy) and 20 others based in Europe, USA and China
doi.org/10.33232/001...
doi.org/10.33232/001...
Witnessing downsizing in the making: quiescent and breathing galaxies at the dawn of the Universe | Published in The Open Journal of Astrophysics
By Emiliano Merlin, Flaminia Fortuni & 19 more. A statistcail exploration of the physical features of quiescent galaxies in a sample at high redshift
doi.org
November 14, 2025 at 8:49 AM
New Publication at the Open Journal of Astrophysics: "Witnessing downsizing in the making: quiescent and breathing galaxies at the dawn of the Universe" by Emiliano Merlin (Osservatorio Astronomico di Roma, Italy) and 20 others based in Europe, USA and China
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Attributing the point symmetric structure of core-collapse supernova remnant N132D to the jittering jets explosion mechanism" by Noam Soker (Technion, Haifa, Israel)
doi.org/10.33232/001...
doi.org/10.33232/001...
Attributing the point symmetric structure of core-collapse supernova remnant N132D to the jittering jets explosion mechanism | Published in The Open Journal of Astrophysics
By Noam Soker. A discussion of the morphology of a supernova remnant and possible explanation for it in terms of the explosion mechanism
doi.org
November 12, 2025 at 8:47 AM
New Publication at the Open Journal of Astrophysics: "Attributing the point symmetric structure of core-collapse supernova remnant N132D to the jittering jets explosion mechanism" by Noam Soker (Technion, Haifa, Israel)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Redshift Drift in Relativistic N-Body Simulations" by Alexander Oestreicher (U. Southern Denmark, DK), Chris Clarkson (QMUL, UK), Julian Adamek (U. Zürich, CH) and
Sofie Marie Koksbang (U. Southern Denmark, DK)
doi.org/10.33232/001...
Sofie Marie Koksbang (U. Southern Denmark, DK)
doi.org/10.33232/001...
Redshift Drift in Relativistic N-Body Simulations | Published in The Open Journal of Astrophysics
By Alexander Oestreicher, Chris Clarkson & 2 more. Numerical calculations of the cosmological redshift drift effect for comparison with future surveys
doi.org
November 12, 2025 at 8:37 AM
New Publication at the Open Journal of Astrophysics: "Redshift Drift in Relativistic N-Body Simulations" by Alexander Oestreicher (U. Southern Denmark, DK), Chris Clarkson (QMUL, UK), Julian Adamek (U. Zürich, CH) and
Sofie Marie Koksbang (U. Southern Denmark, DK)
doi.org/10.33232/001...
Sofie Marie Koksbang (U. Southern Denmark, DK)
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Neutrino Constraints on Black Hole Formation in M31" by Yudai Sawa (U. Tokyo, Japan) and 11 others all based in Japan
doi.org/10.33232/001...
doi.org/10.33232/001...
Neutrino Constraints on Black Hole Formation in M31 | Published in The Open Journal of Astrophysics
By Yudai Suwa, Ryuichiro Akaho & 10 more. A calculation of the neutrino emission expected from the collapse of massive stars and its use in constraining black hole formation using neutrino detectors
doi.org
November 11, 2025 at 9:05 AM
New Publication at the Open Journal of Astrophysics: "Neutrino Constraints on Black Hole Formation in M31" by Yudai Sawa (U. Tokyo, Japan) and 11 others all based in Japan
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Dynamical friction and measurements of the splashback radius in galaxy clusters" by Talia M. O'Shea (U. Wisconsin-Madison, USA), Josh Borrow (U. Pennsylvania, USA), and Stephanie O'Neil & Mark Vogelsberger (MIT)
doi.org/10.33232/001...
doi.org/10.33232/001...
Dynamical friction and measurements of the splashback radius in galaxy clusters | Published in The Open Journal of Astrophysics
By Talia M. O'Shea, Josh Borrow & 2 more. A study suggesting that dynamical friction does not play a major role in reducing the radius of the splashback feature in real data compared to numerical simu...
doi.org
November 11, 2025 at 8:36 AM
New Publication at the Open Journal of Astrophysics: "Dynamical friction and measurements of the splashback radius in galaxy clusters" by Talia M. O'Shea (U. Wisconsin-Madison, USA), Josh Borrow (U. Pennsylvania, USA), and Stephanie O'Neil & Mark Vogelsberger (MIT)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Measuring the splashback feature: Dependence on halo properties and history" by Qiaorong S. Yu (Oxford U., UK) and 9 others based in the UK and USA.
doi.org/10.33232/001...
doi.org/10.33232/001...
Measuring the splashback feature: Dependence on halo properties and history | Published in The Open Journal of Astrophysics
By Qiaorong S. Yu, Stephanie O'Neil & 8 more. How the properties of splashback features in halo profiles relate to the halo's assembly history (e.g. mass accretion rate and most recent merger time)
doi.org
November 7, 2025 at 9:13 AM
New Publication at the Open Journal of Astrophysics: "Measuring the splashback feature: Dependence on halo properties and history" by Qiaorong S. Yu (Oxford U., UK) and 9 others based in the UK and USA.
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The Unhurried Universe: A Continued Search for Long Term Variability in ASAS-SN" by Sydney Petz (Ohio State University, USA) and 7 others based in the USA, Chile and China.
doi.org/10.33232/001...
doi.org/10.33232/001...
The Unhurried Universe: A Continued Search for Long Term Variability in ASAS-SN | Published in The Open Journal of Astrophysics
By Sydney Petz, C. S. Kochanek & 5 more. Discovery and investigation of slowly-varying sources in the All Sky Automated Survey for SuperNovae leading to the identification of 200 new variable stars
doi.org
November 5, 2025 at 9:09 AM
New Publication at the Open Journal of Astrophysics: "The Unhurried Universe: A Continued Search for Long Term Variability in ASAS-SN" by Sydney Petz (Ohio State University, USA) and 7 others based in the USA, Chile and China.
doi.org/10.33232/001...
doi.org/10.33232/001...
This is our 400th publication!
New Publication at the Open Journal of Astrophysics: "A substellar flyby that shaped the orbits of the giant planets" by Garett Brown (U. Toronto at Scarborough, Canada), Renu Malhotra (U. Arizona, USA) and Hanno Rein (U. Toronto at Scarborough, Canada)
doi.org/10.33232/001...
doi.org/10.33232/001...
A substellar flyby that shaped the orbits of the giant planets | Published in The Open Journal of Astrophysics
By Garett Brown, Renu Malhotra & 1 more. An ancient close encounter with a substellar object offers a plausible explanation for the origin of the moderate eccentricities and inclinations of the giant ...
doi.org
November 5, 2025 at 8:49 AM
This is our 400th publication!
New Publication at the Open Journal of Astrophysics: "The Potential Impact of Primordial Black Holes on Exoplanet Systems" by Garett Brown (U. Toronto at Scarborough), Linda He (Harvard U., USA), James Unwin (U. Illinois Chicago, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
The Potential Impact of Primordial Black Holes on Exoplanet Systems | Published in The Open Journal of Astrophysics
By Garett Brown, Linda He & 1 more. An exploration of the possibility that primordial black holes (PBH) in our Galaxy, might impact the orbits of exoplanets
doi.org
November 5, 2025 at 8:49 AM
New Publication at the Open Journal of Astrophysics: "The Potential Impact of Primordial Black Holes on Exoplanet Systems" by Garett Brown (U. Toronto at Scarborough), Linda He (Harvard U., USA), James Unwin (U. Illinois Chicago, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "A substellar flyby that shaped the orbits of the giant planets" by Garett Brown (U. Toronto at Scarborough, Canada), Renu Malhotra (U. Arizona, USA) and Hanno Rein (U. Toronto at Scarborough, Canada)
doi.org/10.33232/001...
doi.org/10.33232/001...
A substellar flyby that shaped the orbits of the giant planets | Published in The Open Journal of Astrophysics
By Garett Brown, Renu Malhotra & 1 more. An ancient close encounter with a substellar object offers a plausible explanation for the origin of the moderate eccentricities and inclinations of the giant ...
doi.org
November 5, 2025 at 8:35 AM
New Publication at the Open Journal of Astrophysics: "A substellar flyby that shaped the orbits of the giant planets" by Garett Brown (U. Toronto at Scarborough, Canada), Renu Malhotra (U. Arizona, USA) and Hanno Rein (U. Toronto at Scarborough, Canada)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Maximizing Ariel’s Survey Leverage for Population-Level Studies of Exoplanets" by Nicolas B. Cowan and Ben Coull-Neveu (McGill University, Canada)
doi.org/10.33232/001...
doi.org/10.33232/001...
Maximizing Ariel's Survey Leverage for Population-Level Studies of Exoplanets | Published in The Open Journal of Astrophysics
By Nicolas B Cowan, Ben Coull-Neveu. A discussion of different schemes to select the mission reference sample for a notional three year transit spectroscopy survey with the European Space Agency's Ari...
doi.org
November 4, 2025 at 5:02 PM
New Publication at the Open Journal of Astrophysics: "Maximizing Ariel’s Survey Leverage for Population-Level Studies of Exoplanets" by Nicolas B. Cowan and Ben Coull-Neveu (McGill University, Canada)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Fast X-ray Transient Detection with AXIS: application to Magnetar Giant Flares" by Michela Negro (Louisiana State University, USA) and 8 others based in the USA and Canada
doi.org/10.33232/001...
doi.org/10.33232/001...
Fast X-ray Transient Detection with AXIS: Application to Magnetar Giant Flares | Published in The Open Journal of Astrophysics
By Michela Negro, Zorawar Wadiasingh & 7 more. A feasibility study of detecting Magnetar Giant Flares with the Advanced X-ray Imaging Satellite (AXIS)
doi.org
October 28, 2025 at 10:03 AM
New Publication at the Open Journal of Astrophysics: "Fast X-ray Transient Detection with AXIS: application to Magnetar Giant Flares" by Michela Negro (Louisiana State University, USA) and 8 others based in the USA and Canada
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Instability and vertical eccentricity variation in global hydrodynamic disk simulations" by Janosz W Dewberry (U Mass. Amherst, USA), Henrik N Latter & Gordon I Ogilvie (U Cambridge, UK) & Sebastien Fromang (Saclay, FR)
doi.org/10.33232/001...
doi.org/10.33232/001...
Instability and vertical eccentricity variation in global hydrodynamic disk simulations | Published in The Open Journal of Astrophysics
By Janosz W Dewberry, Henrik N Latter & 2 more. A discussion of the instabilities and eccentricity variations generated in hydrodynamic simulations of accretion disks.
doi.org
October 28, 2025 at 9:45 AM
New Publication at the Open Journal of Astrophysics: "Instability and vertical eccentricity variation in global hydrodynamic disk simulations" by Janosz W Dewberry (U Mass. Amherst, USA), Henrik N Latter & Gordon I Ogilvie (U Cambridge, UK) & Sebastien Fromang (Saclay, FR)
doi.org/10.33232/001...
doi.org/10.33232/001...
Reposted by The Open Journal of Astrophysics
That Welsh by-election is the first election Putin has lost in over 20 years.
October 24, 2025 at 3:02 PM
That Welsh by-election is the first election Putin has lost in over 20 years.
Reposted by The Open Journal of Astrophysics
Next in our series on cooperative OA journal publishing models for #OAWeek, we're highlighting the overlay model.
Learn more in this past interview with @telescoper.bsky.social, EIC of @ojastro.bsky.social, and Christian Gogolin, founding editor of @quantum-journal.bsky.social: buff.ly/xD2fSen
Learn more in this past interview with @telescoper.bsky.social, EIC of @ojastro.bsky.social, and Christian Gogolin, founding editor of @quantum-journal.bsky.social: buff.ly/xD2fSen
October 24, 2025 at 7:08 PM
Next in our series on cooperative OA journal publishing models for #OAWeek, we're highlighting the overlay model.
Learn more in this past interview with @telescoper.bsky.social, EIC of @ojastro.bsky.social, and Christian Gogolin, founding editor of @quantum-journal.bsky.social: buff.ly/xD2fSen
Learn more in this past interview with @telescoper.bsky.social, EIC of @ojastro.bsky.social, and Christian Gogolin, founding editor of @quantum-journal.bsky.social: buff.ly/xD2fSen
New Publication at the Open Journal of Astrophysics: "Clustering of DESI galaxies split by thermal Sunyaev-Zeldovich effect" by Michael Rashkovetskyi (Cfa Harvard-Smithsonian, USA) et al. (49 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
Clustering of DESI galaxies split by thermal Sunyaev-Zeldovich effect | Published in The Open Journal of Astrophysics
By Michael Rashkovetskyi, Daniel J. Eisenstein & 47 more. How the clustering properties of DESI galaxies relate to the local thermal Sunyaev-Zeldovich emission mapped by ACT
doi.org
October 23, 2025 at 8:30 AM
New Publication at the Open Journal of Astrophysics: "Clustering of DESI galaxies split by thermal Sunyaev-Zeldovich effect" by Michael Rashkovetskyi (Cfa Harvard-Smithsonian, USA) et al. (49 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The DECADE cosmic shear project IV: cosmological constraints from 107 million galaxies across 5,400 deg^2 of the sky" by Dhayaa Anbajagane (University of Chicago, USA) et al. (75 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
The DECADE cosmic shear project IV: cosmological constraints from 107 million galaxies across 5,400 deg$^2$ of the sky | Published in The Open Journal of Astrophysics
By D. Anbajagane, C. Chang & 73 more. Cosmological constraints from the Dark Energy Camera All Data Everywhere (DECADE) project
doi.org
October 22, 2025 at 2:48 PM
New Publication at the Open Journal of Astrophysics: "The DECADE cosmic shear project IV: cosmological constraints from 107 million galaxies across 5,400 deg^2 of the sky" by Dhayaa Anbajagane (University of Chicago, USA) et al. (75 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The DECADE cosmic shear project III: validation of analysis pipeline using spatially inhomogeneous data" by Dhayaa Anbajagane et al. (54 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
The DECADE cosmic shear project III: validation of analysis pipeline using spatially inhomogeneous data | Published in The Open Journal of Astrophysics
By D. Anbajagane, C. Chang & 51 more. The data analysis pipeline for the cosmic shear analysis of the Dark Energy Camera All Data Everywhere (DECADE) weak lensing project
doi.org
October 22, 2025 at 2:06 PM
New Publication at the Open Journal of Astrophysics: "The DECADE cosmic shear project III: validation of analysis pipeline using spatially inhomogeneous data" by Dhayaa Anbajagane et al. (54 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The DECADE cosmic shear project II: photometric redshift calibration of the source galaxy sample" by Dhayaa Anbajagane et al. (53 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
The DECADE cosmic shear project II: photometric redshift calibration of the source galaxy sample | Published in The Open Journal of Astrophysics
By D. Anbajagane, A. Alarcon & 51 more. Photometric redshift characterization and calibration for the Dark Energy Camera All Data Everywhere (DECADE) weak lensing catalogue
doi.org
October 22, 2025 at 1:08 PM
New Publication at the Open Journal of Astrophysics: "The DECADE cosmic shear project II: photometric redshift calibration of the source galaxy sample" by Dhayaa Anbajagane et al. (53 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The DECADE cosmic shear project I: A new weak lensing shape catalog of 107 million galaxies" by Dhayaa Anbajagane et al. (54 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
The DECADE cosmic shear project I: A new weak lensing shape catalog of 107 million galaxies | Published in The Open Journal of Astrophysics
By D. Anbajagane, Z. Zhang & 52 more. Overview of the Dark Energy Camera All Data Everywhere (DECADE) catalogue and cosmological results obtained therefrom
doi.org
October 22, 2025 at 12:42 PM
New Publication at the Open Journal of Astrophysics: "The DECADE cosmic shear project I: A new weak lensing shape catalog of 107 million galaxies" by Dhayaa Anbajagane et al. (54 authors)
doi.org/10.33232/001...
doi.org/10.33232/001...
Just a reminder that we have an account on Mastodon, which we encourage you to follow. Posts there contain more information than Bluesky's constraints allow.
fediscience.org/@OJ_Astro
fediscience.org/@OJ_Astro
Open Journal of Astrophysics (@OJ_Astro@fediscience.org)
121 Posts, 16 Following, 689 Followers · The Open Journal of Astrophysics is a peer-reviewed Diamond Open-Access Astrophysics journal using an arXiv overlay. This community-run service is provided ent...
fediscience.org
October 18, 2025 at 12:09 PM
Just a reminder that we have an account on Mastodon, which we encourage you to follow. Posts there contain more information than Bluesky's constraints allow.
fediscience.org/@OJ_Astro
fediscience.org/@OJ_Astro
New Publication at the Open Journal of Astrophysics: "Learned harmonic mean estimation of the Bayesian evidence with normalizing flows" by Alicja Polanska (University College London, UK) and 4 others based in the UK and Switzerland
doi.org/10.33232/001...
doi.org/10.33232/001...
Learned harmonic mean estimation of the Bayesian evidence with normalizing flows | Published in The Open Journal of Astrophysics
By Alicja Polanska, Matthew A. Price & 3 more. A method for estimating Bayesian evidence for use in model comparison, illustrated with a cosmological example.
doi.org
October 17, 2025 at 7:10 AM
New Publication at the Open Journal of Astrophysics: "Learned harmonic mean estimation of the Bayesian evidence with normalizing flows" by Alicja Polanska (University College London, UK) and 4 others based in the UK and Switzerland
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Detecting wide binaries using machine learning algorithms" by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India)
doi.org/10.33232/001...
doi.org/10.33232/001...
Detecting wide binaries using machine learning algorithms | Published in The Open Journal of Astrophysics
By Amoy Ashesh, Harsimran Kaur & 1 more. A method for detecting wide binary systems in Gaia data using machine learning algorithms.
doi.org
October 17, 2025 at 6:56 AM
New Publication at the Open Journal of Astrophysics: "Detecting wide binaries using machine learning algorithms" by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The Giant Arc - Filament or Figment?" by Till Sawala and Meri Teeriaho (University of Helsinki, Finland)
doi.org/10.33232/001...
doi.org/10.33232/001...
The Giant Arc - Filament or Figment? | Published in The Open Journal of Astrophysics
By Till Sawala, Meri Teeriaho. A discussion of the abundance of large arc-like structures formed in the standard cosmological model, with reference to the "Giant Arc" identified in MgII absorption sys...
doi.org
October 15, 2025 at 2:16 PM
New Publication at the Open Journal of Astrophysics: "The Giant Arc - Filament or Figment?" by Till Sawala and Meri Teeriaho (University of Helsinki, Finland)
doi.org/10.33232/001...
doi.org/10.33232/001...