Weekly Update from the Open Journal of Astrophysics – 08/11/2025
It’s Saturday again, so it’s time for the usual update of the week’s new papers at the Open Journal of Astrophysics. Since the last update we have published another five papers, which brings the number in Volume 8 (2025) up to 168, and the total so far published by OJAp up to 403.
The first paper this week is “Maximizing Ariel’s Survey Leverage for Population-Level Studies of Exoplanets” by Nicolas B. Cowan and Ben Coull-Neveu (McGill University, Canada). This article was published in the folder Earth and Planetary Astrophysics on Tuesday 4th November 2025; it discusses various different schemes to select the mission reference sample for a notional three year transit spectroscopy survey with the European Space Agency’s Ariel mission
The overlay is here:
You can find the officially accepted version on arXiv here.
The Fediverse announcement is here:
Open Journal of Astrophysics
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)
https://doi.org/10.33232/001c.146656
November 4, 2025, 5:08 pm 1 boosts 3 favorites
The second paper of the week is “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). This article was published on Wednesday 5th November 2025, also in the folder Earth and Planetary Astrophysics. It argues that an ancient close encounter with a substellar object offers a plausible explanation for the origin of the moderate eccentricities and inclinations of the giant planets.
The overlay is here:
You can find the official version of this one on arXiv here. The federated announcement on Mastodon is here:
Open Journal of Astrophysics
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)
https://doi.org/10.33232/001c.146688
November 5, 2025, 8:34 am 3 boosts 3 favoritesNext one up is “The Potential Impact of Primordial Black Holes on Exoplanet Systems” by Garett Brown (U. Toronto at Scarborough), Linda He (Harvard U., USA), and James Unwin (U. Illinois Chicago, USA). This one was also published on Wednesday 5th November 2025, but in the folder Astrophysics of Galaxies. This one is an exploration of the possibility that primordial black holes (PBHs) in our Galaxy, might impact the orbits of exoplanets. The overlay is here:
You can find the official accepted version on arXiv here. The fediverse announcement is here:
Open Journal of Astrophysics
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)
https://doi.org/10.33232/001c.146689
November 5, 2025, 8:49 am 3 boosts 1 favoritesThe fourth paper to report is “The Unhurried Universe: A Continued Search for Long Term Variability in ASAS-SN” by Sydney Petz, C. S. Kochanek & K. Z. Stanek (Ohio State U., USA), Benjamin J. Shappee (U. Hawaii, USA), Subo Dong (Peking University, China), J. L. Prieto (Universidad Diego Portales, Chile) and Todd A. Thompson (Ohio State U., USA). This one was also published on Wednesday November 5th 2025, but in the folder Solar and Stellar Astrophysics. It describes the discovery and investigation of slowly-varying sources in the All Sky Automated Survey for SuperNovae (ASAS-AN) leading to the identification of 200 new variable stars. The overlay is here:
You can find the official published version on arXiv here. The Fediverse announcement follows:
Open Journal of Astrophysics
New Publication at the Open Journal of Astrophysics: "The Unhurried Universe: A Continued Search for Long Term Variability in ASAS-SN" by Sydney Petz, C. S. Kochanek & K. Z. Stanek (Ohio State U., USA), Benjamin J. Shappee (U. Hawaii, USA), Subo Dong (Peking University, China), J. L. Prieto (Universidad Diego Portales, Chile) and Todd A. Thompson (Ohio State U., USA)
https://doi.org/10.33232/001c.146690
November 5, 2025, 9:08 am 1 boosts 0 favoritesThe fifth and final paper for this week is “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. This was published on Friday 7th November 2025 in the folder Cosmology and Nongalactic Astrophysics. It discusses 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). The overlay is here:
The officially accepted version can be found on arXiv here. The Fediverse announcement is here:
Open Journal of Astrophysics
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.
https://doi.org/10.33232/001c.146824
November 7, 2025, 9:12 am 0 boosts 0 favoritesThat’s all the papers for this week. I’ll do another report next Saturday.
#Ariel #arXiv241204583v2 #arXiv250606429v2 #arXiv250705389v3 #arXiv250707174v2 #arXiv250722102v2 #CosmologyAndNonGalacticAstrophysics #DarkMatterHaloes #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #eccentricity #EuropeanSpaceAgency #exoplanets #ExtrrasolarPlanets #galaxyFormation #galaxyHaloes #GiantPlanets #OpenAccess #OpenJournalOfAstrophysics #primordialBlackHoles #Splashback #TheOpenJournalOfAstrophysics
A neat story by @DrCarpineti: "'This is the quadfecta, completing the set of observing auroral emissions from all of the four giant planets in the infrared. We knew it should be there since Neptune has all the ingredients you need to create aurorae, but we were never able to detect it using telescopes on the ground.'"
#PlanetaryScience #Neptune #GiantPlanets #IceGiants #SolarSystem
#JWST observations find #water for the first time in the inner #disk around a #youngstar with #giantplanets
Using the James Webb Space Telescope, the MPIA-led MINDS research collaboration discovered water in the inner region of a disk of gas and dust around the young star PDS 70. Astronomers expect terrestrial planets to be forming in that zone. This is the first detection of that kind in a disk that hosts at least two planets. Any rocky planets produced in the inner disk would benefit from a substantial local water reservoir, improving the chances of habitability later on.
Referenced link: https://phys.org/news/2023-05-pressure-driven-ionization-giant-planets-stars.html
Discuss on https://discu.eu/q/https://phys.org/news/2023-05-pressure-driven-ionization-giant-planets-stars.html
Originally posted by Phys.org / @physorg_com: http://nitter.platypush.tech/physorg_com/status/1661748803865837574#m
Experiments shed light on pressure-driven #ionization in #giantplanets and stars @nature https://www.nature.com/articles/s41586-023-05996-8 https://phys.org/news/2023-05-pressure-driven-ionization-giant-planets-stars.html
Scientists have conducted laboratory experiments at Lawrence Livermore National Laboratory (LLNL) that provide new insights on the complex process of pressure-driven ionization in giant planets and stars. Their research, published today in Nature, unveils the material properties and behavior of matter under extreme compression, offering important implications for astrophysics and nuclear fusion research.
🚨 Cool opportunity for a planetary scientist 🚨
AGU is looking for a new Editor-in-Chief of JGR-Planets
Being EiC of JGR-Planets is a great opportunity that I really enjoyed. If you have any interest please apply or reach out to a current (or former) editor to learn more!
See details at https://t.co/fVFC53a4CY
The formal ad is here: https://t.co/WNFQqnOiZW
#AGU #jgrplanets #planetaryscience #geophysics #academicpublishing #moon #mars #mercury #venus #giantplanets #meteorites #asteroids
Royal Observatory of Belgium
In the Dark
Daniel Fischer
Dr. John Barentine FRAS
Corrado
Phys.org
Steve Hauck