Open Journal of Astrophysics
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The Open Journal of Astrophysics is a peer-reviewed Diamond Open-Access Astrophysics journal using an arXiv overlay. This community-run service is provided entirely […] 🌉 bridged from ⁂ https://fediscience.org/@OJ_Astro, follow @ap.brid.gy to interact
New Blog Post at the Open Journal of Astrophysics https://astro.theoj.org/post/4143-our-first-full-house
Our First "Full House"! | Published by The Open Journal of Astrophysics
This week is the first week in which we have published a full house of at least one paper in each of the six sections of astro-ph.
astro.theoj.org
New Blog Post at the Open Journal of Astrophysics https://astro.theoj.org/post/4143-our-first-full-house
Our First "Full House"! | Published by The Open Journal of Astrophysics
This week is the first week in which we have published a full house of at least one paper in each of the six sections of astro-ph.
astro.theoj.org
New Publication at the Open Journal of Astrophysics: "The major cluster merger in Abell 2034 as seen by XRISM: Strong turbulence and spectral anomalies?" by Annie Heinrich (U. Chicago) and 7 others based in the USA and Europe. https://doi.org/10.33232/001c.168514
The major cluster merger in Abell 2034 as seen by XRISM: Strong turbulence and spectral anomalies? | Published in The Open Journal of Astrophysics
By Annie Heinrich, Irina Zhuravleva & 6 more. This study presents XRISM observations of the merging cluster Abell 2034, revealing the broadest emission lines yet seen in a galaxy cluster, indicating potential turbulence and core disruption.
astro.theoj.org
We've published 7 papers so far this week, in five different sections of astro-ph. We just need one paper in the missing section ("High-Energy Astrophysical Phenomena") in the next three days to complete our first "Full House" of a week with at least one paper in all six sections!
We've published 7 papers so far this week, in five different sections of astro-ph. We just need one paper in the missing section ("High-Energy Astrophysical Phenomena") in the next three days to complete our first "Full House" of a week with at least one paper in all six sections!
New Publication at the Open Journal of Astrophysics: "Precision Spectroscopy for 1.7 Million Galaxies from SDSS-IV: Improved Spectral Measurements and Catalogs for eBOSS" by Owen Matthews Acuña (U. Wisconsin Madison, USA) and 8 others based at various instititions in the USA […]
Original post on fediscience.org
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New Publication at the Open Journal of Astrophysics: "An astrometric search for planets in debris disk systems" by Elisabeth M Penderghast & Benjamin C Bromley (U. Utah, USA), Scott J Kenyon (Smithsonian Astrophys. Obs., USA) and Joan R Najita (NSF NOIRLab, USA) https://doi.org/10.33232/001c.168411
An astrometric search for planets in debris disk systems | Published in The Open Journal of Astrophysics
By Elisabeth M Penderghast, Benjamin C Bromley & 2 more. This study uses Gaia astrometric data and machine learning to identify stars with debris disks that may host undiscovered planets, providing potential subjects for future analyses.
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New Publication at the Open Journal of Astrophysics: "Differentiable Halo Mass Prediction and the Cosmology-Dependence of Halo Mass Functions" by Jim Buisman, Florian List and Oliver Hahn (U. Vienna, Austria) https://doi.org/10.33232/001c.168410
Differentiable Halo Mass Prediction and the Cosmology-Dependence of Halo Mass Functions | Published in The Open Journal of Astrophysics
By Jim Buisman, Florian List & 1 more. This study presents a novel approach using a differentiable neural network model for predicting dark matter haloes abundance and their cosmology dependence, achieving competitive accuracy in identifying protohalo regions.
astro.theoj.org
New Publication at the Open Journal of Astrophysics: "BLG723.31.34651 as an eclipsing Roche lobe-filling sdOB+WD binary" by Alekzander Kosakowski, Charles E. Derbyshire, Sydney Jetton and Brad N. Barlow (University of North Carolina, USA) https://doi.org/10.33232/001c.168409
New Blog Post: https://astro.theoj.org/post/4136-our-two-million-dollar-journal
Our Two-Million-Dollar Journal | Published by The Open Journal of Astrophysics
Using the dollar cost of an MNRAS APC as a basis, we have now saved the global astrophysics community over $2M (for an outlay of around $15K).
astro.theoj.org
New Publication at the Open Journal of Astrophysics: "Differentiable Forward Modeling for Efficient and Accurate Shear Inference" by Ismael Mendoza and 7 others on behalf of the LSST Dark Energy Science Collaboration. https://doi.org/10.33232/001c.168201
Differentiable Forward Modeling for Efficient and Accurate Shear Inference | Published in The Open Journal of Astrophysics
By Ismael Mendoza, Axel Guinot & 7 more. This study presents a modern implementation of the Bayesian shear inference framework for measuring cosmic shear signal in dark energy optical surveys, requiring no external calibration to handle noise bias.
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New Publication at the Open Journal of Astrophysics: "Second Order Closures for the Radiative Transfer Equation: Some Are Unstable" by Nickolay Y. Gnedin and Harley Katz (U.Chicago, USA) https://doi.org/10.33232/001c.168200
Second Order Closures for the Radiative Transfer Equation: Some Are Unstable | Published in The Open Journal of Astrophysics
By Nickolay Y. Gnedin, Harley Katz. This study explores higher-order closure relations in cosmic reionization simulations, finding that direct generalizations of M1 and OTVET are physically unstable, limiting second-order closure options.
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New Publication at the Open Journal of Astrophysics: "Energy-Space Analysis of Tidal Stripping in Stellar-Dark Matter Systems" by Bradley Arias (UC Berkeley, USA), Nicole E. Drakos (U. Hawaii, USA) and James E. Taylor (U. Waterloo, Canada) https://doi.org/10.33232/001c.168199
Energy-Space Analysis of Tidal Stripping in Stellar-Dark Matter Systems | Published in The Open Journal of Astrophysics
By Bradley Arias, Nicole E. Drakos & 1 more. This study uses simulations to explore how tidal stripping shapes the stellar distribution of dwarf galaxies, also suggesting a pathway for the formation of galaxies deficient in dark matter
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New Publication at the Open Journal of Astrophysics: "How can we finally see the first light? Status and perspective in the search for Population III stars" by Alessandra Venditti (U. Texas Austin, USA) and 28 others from around the world https://doi.org/10.33232/001c.167811
How can we finally see the first light? Status and perspective in the search for Population III stars | Published in The Open Journal of Astrophysics
By Alessandra Venditti, Daniel Schaerer & 27 more. This review discusses the ongoing search for the first stars (Population III), their formation, and characteristics. It highlights various observational strategies and the role of advanced technology in this quest.
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New Publication at the Open Journal of Astrophysics: "Cosmological Dynamics of Multi-Axion Quintessence" by Supakorn Katewongveerachart (Mahidol U., Thailand) and David J. E. Marsh, King's College London, UK) https://doi.org/10.33232/001c.167719
Cosmological Dynamics of Multi-Axion Quintessence | Published in The Open Journal of Astrophysics
By Supakorn Katewongveerachart, David J. E. Marsh. This study explores dark energy dynamics, and their potential observational consequences, for a cosmological model with two, three or four axion fields
astro.theoj.org
New Publication at the Open Journal of Astrophysics: "White dwarf + M dwarf Detached Binaries in Long Period Radio Transients: Observed Binary Parameters, Evolution, and Population Constraints" by Antonio Rodriguez (Harvard-Smithsonian CfA, USA), Kareem El-Badry (Caltech, USA), Iris de Ruiter (U […]
Original post on fediscience.org
fediscience.org
New Publication at the Open Journal of Astrophysics: "First Light And Reionization Epoch Simulations (FLARES) XXI: The UV Indices of Galaxies in the Early Universe" by Connor Sant Fournier (University of Malta, Malta) and 7 others based in Malta and the UK. https://doi.org/10.33232/001c.167550
New Publication at the Open Journal of Astrophysics: "Dust in the Average Galaxy: Attenuation, Emission, and Opacity from 0<z<7" by Caitlin M. Casey (University of California Santa Barbara, USA) and an international cast of 45 others. https://doi.org/10.33232/001c.167549
Dust in the Average Galaxy: Attenuation, Emission, and Opacity from $0<z<7$ | Published in The Open Journal of Astrophysics
By Caitlin M. Casey, Hollis B. Akins & 44 more. This study analyzes over 500,000 galaxies to understand dust emission and attenuation properties. Findings reveal UV/optical attenuation underestimates IR luminosity, and dust constraints are crucial for understanding star-forming galaxies.
astro.theoj.org
New Publication at the Open Journal of Astrophysics: "Ghostly DLAs in SDSS DR16" by Patrick Petitjean (Institut d’Astrophysique de Paris, France) https://doi.org/10.33232/001c.167548
Ghostly DLAs in SDSS DR16 | Published in The Open Journal of Astrophysics
By Patrick Petitjean. This study revisits the origin of proximate damped Lyman-alpha absorbers (PDLAs), associating most with the AGN or quasar host galaxy environment.
astro.theoj.org
For Authors! This article presents recommendations for authors to prepare and publish data in a way that will better represent and support science results, enable better data sharing, improve reproducibility, and enhance the reusability of data by the community […]
Original post on fediscience.org
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New Publication at the Open Journal of Astrophysics: "Dust and Grain Size Evolution in Galaxy Simulations: What Matters and What Does Not" by Massimiliano Parente & Desika Narayanan (U. Florida, USA) and Paul Torrey (U. Virginia, USA) https://doi.org/10.33232/001c.166984
Dust and Grain Size Evolution in Galaxy Simulations: What Matters and What Does Not | Published in The Open Journal of Astrophysics
By Massimiliano Parente, Desika Narayanan & 1 more. This study presents the first implementation of an evolving dust grain size distribution within a model of galaxy evolution, successfully reproducing key observational constraints and exploring the mechanisms shaping galaxies.
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New Publication at the Open Journal of Astrophysics: "A GLIMPSE of the 99%: a census of the faintest galaxies during the epoch of reionization and its implications for galaxy formation models" by Hakim Atek (Sorbonne Université, Paris, France) and 22 others based around the world […]
Original post on fediscience.org
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New Publication at the Open Journal of Astrophysics: "The velocity coherence scale: a novel probe of cosmic homogeneity and a potential standard ruler" by Leonardo Giani (Swinburne U. Tech.), Cullan Howlet (U.Queensland), Chris Blake (Swinburne), Ryan J. Turner (ANU) and Tamara M. Davis (U […]
Original post on fediscience.org
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New Publication at the Open Journal of Astrophysics: "Search for neutrino emission from blazar γ--ray flares accounting for possible neutrino time delays" by Egor Podlesny & iFoteini Oikonomou (Norwegian University of Science & Technology, Trondheim, Norway) https://doi.org/10.33232/001c.166774
Search for neutrino emission from blazar $γ$-ray flares accounting for possible neutrino time delays | Published in The Open Journal of Astrophysics
By Egor Podlesnyi, Foteini Oikonomou. The study investigates high-energy neutrino emissions associated with blazar flares, using data from IceCat-1, MOJAVE, CGRaBS, and Fermi-LAT. A slight correlation was found, consistent with the null hypothesis.
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New Publication at the Copen Journal of Astrophysics: "TDCOSMO XXVI: Uniform Lens Modeling of Eight Doubly Imaged Quasars" by Ryan Brady (Stony Brook University, USA) and 9 others based around the world. https://doi.org/10.33232/001c.166553
TDCOSMO XXVI: Uniform Lens Modeling of Eight Doubly Imaged Quasars | Published in The Open Journal of Astrophysics
By Ryan Brady, Xiang-Yu Huang & 8 more. The study presents a new method for analyzing doubly imaged quasars using the Hubble Space Telescope, revealing that arc surface brightness is key to precision in mass model measurements.
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New Publication at the Open Journal of Astrophysics: "First Detection of Extensive Air Showers Using a Small-Aperture Fluorescence Telescope" by M. Zotov (M.V. Lomonosov Moscow State University, Russia) and 7 others based in Russia and Armenia https://doi.org/10.33232/001c.166484
First Detection of Extensive Air Showers Using a Small-Aperture Fluorescence Telescope | Published in The Open Journal of Astrophysics
By M. Zotov, A. Trusov & 6 more. The study reports the first-ever detection of extensive air showers from ultra-high-energy cosmic rays using a compact fluorescence telescope, employing both conventional and deep learning analysis methods.
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New Publication at the Open Journal of Astrophysics: "From Clumps to Sheets: Geometry Controls the Temperature PDF of Multi-Phase Gas" by Zirui Chen and S. Peng Oh (UC Santa Barbara, USA) https://doi.org/10.33232/001c.166483
From Clumps to Sheets: Geometry Controls the Temperature PDF of Multi-Phase Gas | Published in The Open Journal of Astrophysics
By Zirui Chen, S. Peng Oh. This study uses 3D hydrodynamic simulations to show that the temperature probability distribution functions (PDFs) of multi-phase turbulent gas differ significantly under interstellar medium (ISM) and circumgalactic medium (CGM) conditions
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New Publication at the Open Journal of Astrophysics: "Small-scale turbulence alongside large-scale turbulence in a z=1.87 star-forming galaxy with an outflowing wind, revealed by multi-point structure functions" by Itzhak Goldman (Afeka College, Israel) https://doi.org/10.33232/001c.166324
Small-scale turbulence alongside large-scale turbulence in a z=1.87 star-forming galaxy with an outflowing wind, revealed by multi-point structure functions | Published in The Open Journal of Astrophysics
By Itzhak Goldman. Goldman's study found evidence of large and small scale turbulence in the star-forming galaxy CSWA13, suggesting that star clusters and large clumps within the galaxy could be driving this turbulence.
astro.theoj.org
New Publication at the Open Journal of Astrophysics: "The Ray Tracing Sampler: Bayesian Sampling of Neural Networks for Everyone" by Peter Behroozi (U. Arizona, USA) https://doi.org/10.33232/001c.165932
The Ray Tracing Sampler: Bayesian Sampling of Neural Networks for Everyone | Published in The Open Journal of Astrophysics
By Peter Behroozi. The study presents a new family of Markov Chain Monte Carlo sampling methods based on ray tracing, offering higher resilience to heating for stochastic gradients and the ability to cross
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New Publication at the Open Journal of Astrophysics: "Enhancing weak lensing redshift distribution characterization by optimizing the Dark Energy Survey Self-Organizing Map Photo-z method" by A. Campos (Carnegie Mellon U., USA) and the DES collaboration (113 authors) […]
Original post on fediscience.org
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