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: "JWST observations of three long-period AM CVn binaries: detection of the donors and hints of magnetically truncated disks" by
Kareem El-Badry (Caltech) and 3 others based in the USA.
doi.org/10.33232/001...
Kareem El-Badry (Caltech) and 3 others based in the USA.
doi.org/10.33232/001...
JWST observations of three long-period AM CVn binaries: detection of the donors and hints of magnetically truncated disks | Published in The Open Journal of Astrophysics
By Kareem El-Badry, Antonio C. Rodriguez & 2 more. High-cadence infrared spectroscopy used to analyze three long-period, eclipsing AM CVn binaries; findings suggest the presence of magnetized white dw...
doi.org
February 18, 2026 at 8:17 AM
New Publication at the Open Journal of Astrophysics: "JWST observations of three long-period AM CVn binaries: detection of the donors and hints of magnetically truncated disks" by
Kareem El-Badry (Caltech) and 3 others based in the USA.
doi.org/10.33232/001...
Kareem El-Badry (Caltech) and 3 others based in the USA.
doi.org/10.33232/001...
Reposted by The Open Journal of Astrophysics
Here's an interesting review of astrophysics papers on arXiv, including pertinent comments on the absurdity of the publishing system and this mention of @ojastro.bsky.social
arxiv.org/abs/2602.12303
arxiv.org/abs/2602.12303
February 17, 2026 at 8:42 PM
Here's an interesting review of astrophysics papers on arXiv, including pertinent comments on the absurdity of the publishing system and this mention of @ojastro.bsky.social
arxiv.org/abs/2602.12303
arxiv.org/abs/2602.12303
Reposted by The Open Journal of Astrophysics
Great paper on the Great Attractor, just published by The Open Journal of Astrophysics
doi.org/10.33232/001...
@ojastro.bsky.social 🧪 #Cosmology #Cosmicflows
doi.org/10.33232/001...
@ojastro.bsky.social 🧪 #Cosmology #Cosmicflows
February 17, 2026 at 9:59 AM
Great paper on the Great Attractor, just published by The Open Journal of Astrophysics
doi.org/10.33232/001...
@ojastro.bsky.social 🧪 #Cosmology #Cosmicflows
doi.org/10.33232/001...
@ojastro.bsky.social 🧪 #Cosmology #Cosmicflows
New Publication at the Open Journal of Astrophysics: "Revisiting the Great Attractor: The Local Group’s streamline trajectory, cosmic velocity and dynamical fate" by Richard Stiskalek (Oxford U., UK) and 5 others based in the UK, France, Sweden and Canada
doi.org/10.33232/001...
doi.org/10.33232/001...
Revisiting the Great Attractor: The Local Group's streamline trajectory, cosmic velocity and dynamical fate | Published in The Open Journal of Astrophysics
By Richard Stiskalek, Harry Desmond & 4 more. The study revisits the Great Attractor concept, finding that it doesn't dominate the Local Group's cosmic velocity; multiple structures contribute to the ...
doi.org
February 17, 2026 at 7:34 AM
New Publication at the Open Journal of Astrophysics: "Revisiting the Great Attractor: The Local Group’s streamline trajectory, cosmic velocity and dynamical fate" by Richard Stiskalek (Oxford U., UK) and 5 others based in the UK, France, Sweden and Canada
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "DIPLODOCUS II: Implementation of transport equations and test cases relevant to micro-scale physics of jetted astrophysical sources" by C N Everett (Oxford), Marc Klinger-Plaisier (Amsterdam) & Garret Cotter (Oxford)
doi.org/10.33232/001...
doi.org/10.33232/001...
DIPLODOCUS II: Implementation of transport equations and test cases relevant to micro-scale physics of jetted astrophysical sources | Published in The Open Journal of Astrophysics
By Christopher N Everett, Marc Klinger-Plaisier & 1 more. DIPLODOCUS is a framework developed for particle distribution transport, with its numerical implementation detailed in Diplodocus.jl. It uses ...
doi.org
February 17, 2026 at 7:16 AM
New Publication at the Open Journal of Astrophysics: "DIPLODOCUS II: Implementation of transport equations and test cases relevant to micro-scale physics of jetted astrophysical sources" by C N Everett (Oxford), Marc Klinger-Plaisier (Amsterdam) & Garret Cotter (Oxford)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "V717 Andromedae: An Active Low Mass Ratio Contact Binary" by Surjit S. Wadhwa (Western Sydney U. Australia) and four others based in Australia and Serbia.
doi.org/10.33232/001...
doi.org/10.33232/001...
V717 Andromedae: An Active Low Mass Ratio Contact Binary | Published in The Open Journal of Astrophysics
By Surjit S. Wadhwa, Marko Grozdanovic´ & 3 more. The contact binary V717 Andromedae is an extreme low mass ratio system with high inclination and moderate contact, showing signs of chromospheric acti...
doi.org
February 16, 2026 at 8:57 AM
New Publication at the Open Journal of Astrophysics: "V717 Andromedae: An Active Low Mass Ratio Contact Binary" by Surjit S. Wadhwa (Western Sydney U. Australia) and four others based in Australia and Serbia.
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "SKA-Low simulations for a cosmic dawn/epoch of reionisation deep field" by Anna Bonaldi (Square Kilometre Array Observatory, UK) and 8 others based in the UK, France, Italy and Australia.
doi.org/10.33232/001...
doi.org/10.33232/001...
SKA-Low simulations for a cosmic dawn/epoch of reionisation deep field | Published in The Open Journal of Astrophysics
By Anna Bonaldi, Philippa Hartley & 8 more. A simulation of an SKA-Low cosmic dawn/epoch of reionisation observation to advance foreground-mitigation approaches: the simulation includes various sky co...
doi.org
February 16, 2026 at 8:31 AM
New Publication at the Open Journal of Astrophysics: "SKA-Low simulations for a cosmic dawn/epoch of reionisation deep field" by Anna Bonaldi (Square Kilometre Array Observatory, UK) and 8 others based in the UK, France, Italy and Australia.
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Dynamics in the Cores of Self-Interacting Dark Matter Halos: Reduced Stalling and Accelerated Core Collapse" by Frank C. van den Bosch and Shashank Dattathri (Yale University, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
Dynamics in the Cores of Self-Interacting Dark Matter Halos: Reduced Stalling and Accelerated Core Collapse | Published in The Open Journal of Astrophysics
By Frank C. van den Bosch, Shashank Dattathri. This study uses simulations to explore core dynamics in self-interacting dark matter (SIDM) halos. Findings suggest strong self-interactions prevent core...
doi.org
February 13, 2026 at 8:28 AM
New Publication at the Open Journal of Astrophysics: "Dynamics in the Cores of Self-Interacting Dark Matter Halos: Reduced Stalling and Accelerated Core Collapse" by Frank C. van den Bosch and Shashank Dattathri (Yale University, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Supermassive black hole growth from stellar binary encounters" by Aubrey L Jones and Benjamin C Bromley (University of Utah, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
Supermassive black hole growth from stellar binary encounters | Published in The Open Journal of Astrophysics
By Aubrey L Jones, Benjamin C Bromley. The study explores the growth of supermassive black holes (SMBHs) through stellar accretion via the Hill's mechanism, predicting capture rates and identifying po...
doi.org
February 12, 2026 at 7:32 AM
New Publication at the Open Journal of Astrophysics: "Supermassive black hole growth from stellar binary encounters" by Aubrey L Jones and Benjamin C Bromley (University of Utah, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
Reposted by The Open Journal of Astrophysics
Our paper where we test how reliably one can recover galaxy properties using nebular emission lines at high-z due to star-dust geometry and variation in the underlying stellar populations is now published in the OJAp. All the scripts and data to reproduce the results are on GitHub. Do have a read!
New Publication at the Open Journal of Astrophysics: "Interpreting nebular emission lines in the high-redshift Universe" by Aswin P. Vijayan (U. Sussex, UK) and 9 others based in the UK, Taiwan, China and The Netherlands
doi.org/10.33232/001...
doi.org/10.33232/001...
Interpreting nebular emission lines in the high-redshift Universe | Published in The Open Journal of Astrophysics
By Aswin Payyoor Vijayan, Robert M. Yates & 8 more. This study examines the reliability of diagnostics used to estimate star formation rate and gas-phase oxygen abundance in high-redshift galaxies. It...
doi.org
February 11, 2026 at 11:30 AM
Our paper where we test how reliably one can recover galaxy properties using nebular emission lines at high-z due to star-dust geometry and variation in the underlying stellar populations is now published in the OJAp. All the scripts and data to reproduce the results are on GitHub. Do have a read!
New Publication at the Open Journal of Astrophysics: "Derivative-Aligned Anticipation of Forbush Decreases from Entropy and Fractal Markers" by Juan D. Perez-Navarro & David Sierra Porta (Universidad Tecnológica de Bolívar, Colombia)
doi.org/10.33232/001...
doi.org/10.33232/001...
Derivative-Aligned Anticipation of Forbush Decreases from Entropy and Fractal Markers | Published in The Open Journal of Astrophysics
By Juan D. Perez-Navarro, David Sierra Porta. The study presents a feature-based framework for predicting Forbush decreases in neutron-monitor records using various computational methods. The approach...
doi.org
February 11, 2026 at 5:21 PM
New Publication at the Open Journal of Astrophysics: "Derivative-Aligned Anticipation of Forbush Decreases from Entropy and Fractal Markers" by Juan D. Perez-Navarro & David Sierra Porta (Universidad Tecnológica de Bolívar, Colombia)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Interpreting nebular emission lines in the high-redshift Universe" by Aswin P. Vijayan (U. Sussex, UK) and 9 others based in the UK, Taiwan, China and The Netherlands
doi.org/10.33232/001...
doi.org/10.33232/001...
Interpreting nebular emission lines in the high-redshift Universe | Published in The Open Journal of Astrophysics
By Aswin Payyoor Vijayan, Robert M. Yates & 8 more. This study examines the reliability of diagnostics used to estimate star formation rate and gas-phase oxygen abundance in high-redshift galaxies. It...
doi.org
February 11, 2026 at 8:22 AM
New Publication at the Open Journal of Astrophysics: "Interpreting nebular emission lines in the high-redshift Universe" by Aswin P. Vijayan (U. Sussex, UK) and 9 others based in the UK, Taiwan, China and The Netherlands
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Rapid cosmological inference with the two-loop matter power spectrum" by Thomas Bakx (Utrecht U., NL), Henrique Rubira (LMU, DE), Nora Elisa Chisari (Utrecht) and Zvonimir Vlah (Ruđer Bošković Institute, Croatia)
doi.org/10.33232/001...
doi.org/10.33232/001...
Rapid cosmological inference with the two-loop matter power spectrum | Published in The Open Journal of Astrophysics
By Thomas Bakx, Henrique Rubira & 2 more. The study uses the COBRA method to compute the two-loop effective field theory power spectrum of dark matter density fluctuations, providing more precise cosm...
doi.org
February 10, 2026 at 6:42 AM
New Publication at the Open Journal of Astrophysics: "Rapid cosmological inference with the two-loop matter power spectrum" by Thomas Bakx (Utrecht U., NL), Henrique Rubira (LMU, DE), Nora Elisa Chisari (Utrecht) and Zvonimir Vlah (Ruđer Bošković Institute, Croatia)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Faraday Depolarization Study of a Radio Galaxy Using LOFAR Two-metre Sky Survey: Data Release 2" by Samantha Sneha Paul and Abhik Ghosh (Banwarilal Bhalotia College, India)
doi.org/10.33232/001...
doi.org/10.33232/001...
Faraday Depolarization Study of a Radio Galaxy Using LOFAR Two-metre Sky Survey: Data Release 2 | Published in The Open Journal of Astrophysics
By Samantha Sneha Paul, Abhik Ghosh. The study analyzes the depolarization of radio galaxy ILTJ012215.21+254334.8 using LOFAR's Sky Survey data, revealing a preferred three-component model and highlig...
doi.org
February 10, 2026 at 6:26 AM
New Publication at the Open Journal of Astrophysics: "Faraday Depolarization Study of a Radio Galaxy Using LOFAR Two-metre Sky Survey: Data Release 2" by Samantha Sneha Paul and Abhik Ghosh (Banwarilal Bhalotia College, India)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The Bispectrum of Intrinsic Alignments: II. Precision Comparison Against Dark Matter Simulations" by T. Bakx (Utrecht), Toshiki Kurita (MPA Garching), A. Eggemeier (Bonn), Nora Elisa Chisari (Utrecht) and Z. Vlah (Zagreb)
doi.org/10.33232/001...
doi.org/10.33232/001...
The Bispectrum of Intrinsic Alignments: II. Precision Comparison Against Dark Matter Simulations | Published in The Open Journal of Astrophysics
By Thomas Bakx, Toshiki Kurita & 3 more. This study uses N-body simulations to accurately measure three-dimensional bispectra of halo intrinsic alignments and dark matter overdensities, providing a me...
doi.org
February 6, 2026 at 7:48 AM
New Publication at the Open Journal of Astrophysics: "The Bispectrum of Intrinsic Alignments: II. Precision Comparison Against Dark Matter Simulations" by T. Bakx (Utrecht), Toshiki Kurita (MPA Garching), A. Eggemeier (Bonn), Nora Elisa Chisari (Utrecht) and Z. Vlah (Zagreb)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Unveiling the drivers of the Baryon Cycles with Interpretable Multi-step Machine Learning and Simulations" by Mst Shamima Khanom, Benjamin W. Keller and Javier Ignacio Saavedra Moreno (U. Memphis, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
Unveiling the drivers of the Baryon Cycles with Interpretable Multi-step Machine Learning and Simulations | Published in The Open Journal of Astrophysics
By Mst Shamima Khanom, Benjamin W. Keller & 1 more. The study uses machine learning methods to understand how galaxies lose or retain baryons, highlighting the relationship between baryon fraction and...
doi.org
February 5, 2026 at 7:41 AM
New Publication at the Open Journal of Astrophysics: "Unveiling the drivers of the Baryon Cycles with Interpretable Multi-step Machine Learning and Simulations" by Mst Shamima Khanom, Benjamin W. Keller and Javier Ignacio Saavedra Moreno (U. Memphis, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "A Systematic Search for Big Dippers in ASAS-SN" by B. JoHantgen (Ohio State University, USA) and 8 others based in the USA, China and Chile.
doi.org/10.33232/001...
doi.org/10.33232/001...
A Systematic Search for Big Dippers in ASAS-SN | Published in The Open Journal of Astrophysics
By B. JoHantgen, D. M. Rowan & 7 more. The study identifies 4 new dipper stars and 15 long-period eclipsing binary candidates using ASAS-SN light curves and multi-wavelength data, categorizing them ba...
doi.org
February 4, 2026 at 8:41 AM
New Publication at the Open Journal of Astrophysics: "A Systematic Search for Big Dippers in ASAS-SN" by B. JoHantgen (Ohio State University, USA) and 8 others based in the USA, China and Chile.
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Inferring Interstellar Medium Density, Temperature, and Metallicity from Turbulent H II Regions" by Larrance Xing (U. Chicago, USA), Nicholas Choustikov (Oxford), Harley Katz (Chicago) and Alex J. Cameron (DAWN, Denmark)
doi.org/10.33232/001...
doi.org/10.33232/001...
Inferring Interstellar Medium Density, Temperature, and Metallicity from Turbulent H II Regions | Published in The Open Journal of Astrophysics
By Larrance Xing, Nicholas Choustikov & 2 more. Supersonic turbulenc eaffects the interpretation of H II region properties, potentially impacting inferred metallicity, ionization, and excitation from ...
doi.org
February 4, 2026 at 8:21 AM
New Publication at the Open Journal of Astrophysics: "Inferring Interstellar Medium Density, Temperature, and Metallicity from Turbulent H II Regions" by Larrance Xing (U. Chicago, USA), Nicholas Choustikov (Oxford), Harley Katz (Chicago) and Alex J. Cameron (DAWN, Denmark)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Photometric Redshifts in JWST Deep Fields: A Pixel-Based Alternative with DeepDISC" by Grant Merz (U. Illinois at Urbana-Champaign) and 6 others, all based in the USA
doi.org/10.33232/001...
doi.org/10.33232/001...
Photometric Redshifts in JWST Deep Fields: A Pixel-Based Alternative with DeepDISC | Published in The Open Journal of Astrophysics
By Grant Merz, Ming-Yang Zhuang & 5 more. The study explores the effectiveness of the DeepDISC machine learning algorithm in estimating photometric redshifts from near-infrared data, demonstrating its...
doi.org
February 2, 2026 at 11:23 AM
New Publication at the Open Journal of Astrophysics: "Photometric Redshifts in JWST Deep Fields: A Pixel-Based Alternative with DeepDISC" by Grant Merz (U. Illinois at Urbana-Champaign) and 6 others, all based in the USA
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The Impact of Star Formation and Feedback Recipes on the Stellar Mass and Interstellar Medium of High-Redshift Galaxies" by Harley Katz (Chicago) and 4 others based in the UK, Sweden and Korea.
doi.org/10.33232/001...
doi.org/10.33232/001...
The Impact of Star Formation and Feedback Recipes on the Stellar Mass and Interstellar Medium of High-Redshift Galaxies | Published in The Open Journal of Astrophysics
By Harley Katz, Martin P. Rey & 3 more. A discussion of MEGATRON, a new model for galaxy formation simulations, highlighting that feedback energy controls star formation at high redshift and highlight...
doi.org
February 2, 2026 at 11:04 AM
New Publication at the Open Journal of Astrophysics: "The Impact of Star Formation and Feedback Recipes on the Stellar Mass and Interstellar Medium of High-Redshift Galaxies" by Harley Katz (Chicago) and 4 others based in the UK, Sweden and Korea.
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "A Cosmic Miracle: A Remarkably Luminous Galaxy at $z_{\rm spec} = 14.44$ Confirmed with JWST" by Rohan Naidu (MIT Kavli Institute) and 45 others.
doi.org/10.33232/001...
doi.org/10.33232/001...
A Cosmic Miracle: A Remarkably Luminous Galaxy at z<sub>spec</sub> = 14.44 Confirmed with JWST | Published in The Open Journal of Astrophysics
By Rohan P. Naidu, Pascal A. Oesch & 44 more. The James Webb Space Telescope (JWST) has discovered a bright galaxy, MoM-z14, located 280 million years post-Big Bang, challenging previous models and su...
doi.org
January 30, 2026 at 7:56 AM
New Publication at the Open Journal of Astrophysics: "A Cosmic Miracle: A Remarkably Luminous Galaxy at $z_{\rm spec} = 14.44$ Confirmed with JWST" by Rohan Naidu (MIT Kavli Institute) and 45 others.
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The Atacama Cosmology Telescope: DR6 Sunyaev-Zel’dovich Selected Galaxy Clusters Catalog" by M. Aguena et al. (101 authors altogether), on behalf of the ACT-DES-HSC Collaboration
doi.org/10.33232/001...
doi.org/10.33232/001...
The Atacama Cosmology Telescope: DR6 Sunyaev-Zel'dovich Selected Galaxy Clusters Catalog | Published in The Open Journal of Astrophysics
By M. Aguena, S. Aiola & 99 more. This study reports on the discovery of 10,040 galaxy clusters in the Atacama Cosmology Telescope data, including 1,180 clusters at high redshifts, using the Sunyaev-Z...
doi.org
January 27, 2026 at 9:57 AM
New Publication at the Open Journal of Astrophysics: "The Atacama Cosmology Telescope: DR6 Sunyaev-Zel’dovich Selected Galaxy Clusters Catalog" by M. Aguena et al. (101 authors altogether), on behalf of the ACT-DES-HSC Collaboration
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "DIPLODOCUS I: Framework for the evaluation of relativistic transport equations with continuous forcing and discrete particle interactions" by Christopher N Everett & Garret Cotter (University of Oxford, UK)
doi.org/10.33232/001...
doi.org/10.33232/001...
DIPLODOCUS I: Framework for the evaluation of relativistic transport equations with continuous forcing and discrete particle interactions | Published in The Open Journal of Astrophysics
By Christopher N Everett, Garret Cotter. DIPLODOCUS is a new framework for mesoscopic modelling of astrophysical systems, using an integral formulation of relativistic transport equations and a discre...
doi.org
January 27, 2026 at 8:50 AM
New Publication at the Open Journal of Astrophysics: "DIPLODOCUS I: Framework for the evaluation of relativistic transport equations with continuous forcing and discrete particle interactions" by Christopher N Everett & Garret Cotter (University of Oxford, UK)
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "Probing Stellar Kinematics with the Time-Asymmetric Hanbury Brown and Twiss Effect" by Lucijana Stanic (University of Zurich, Switzerland) and 13 others based in Zurich, Lausanne and Geneva.
doi.org/10.33232/001...
doi.org/10.33232/001...
Probing Stellar Kinematics with the Time-Asymmetric Hanbury Brown and Twiss Effect | Published in The Open Journal of Astrophysics
By Lucijana Stanic, Ivan Cardea & 12 more. This research demonstrates that intensity interferometry can reveal internal stellar kinematics, providing a new way to observe stellar dynamics with high ti...
doi.org
January 26, 2026 at 11:47 AM
New Publication at the Open Journal of Astrophysics: "Probing Stellar Kinematics with the Time-Asymmetric Hanbury Brown and Twiss Effect" by Lucijana Stanic (University of Zurich, Switzerland) and 13 others based in Zurich, Lausanne and Geneva.
doi.org/10.33232/001...
doi.org/10.33232/001...
New Publication at the Open Journal of Astrophysics: "The Kinematic Properties of TŻO Candidate HV 11417 with Gaia DR3" by Anna J. G. O'Grady (Carnegie Mellon University, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...
The Kinematic Properties of TŻO Candidate HV 11417 with Gaia DR3 | Published in The Open Journal of Astrophysics
By Anna J. G. O'Grady. The study uses updated data to confirm that HV 11417, a potential Thorne-Żytkow Object, is probably part of the Small Magellanic Cloud and qualifies as a runaway star.
doi.org
January 21, 2026 at 9:45 AM
New Publication at the Open Journal of Astrophysics: "The Kinematic Properties of TŻO Candidate HV 11417 with Gaia DR3" by Anna J. G. O'Grady (Carnegie Mellon University, USA)
doi.org/10.33232/001...
doi.org/10.33232/001...