🔭 Category

astro-ph

164 papers

Astro-Ph explores the fundamental nature of our universe, from the birth of stars and the behavior of black holes to the vast structures of galaxies and the invisible forces shaping cosmic evolution. This dynamic field seeks to answer profound questions about how the cosmos works, blending theoretical models with observations from powerful telescopes that peer back to the dawn of time.

At Gist.Science, we process every new preprint uploaded to arXiv in this category as soon as it appears. Our team transforms these complex research papers into accessible content, offering both detailed technical breakdowns for experts and clear, plain-language summaries for curious minds. This ensures that the latest discoveries in astrophysics are understood by everyone, not just those inside the academic bubble.

Below are the most recent astro-ph preprints, each paired with our comprehensive analysis to help you navigate the cutting edge of cosmic research.

🔭 astrophysics

Epoch-Level Astrometric Contamination versus False Cross-Epoch Association in Threshold-Limited Proper-Motion Surveys: A Validated Statistical Framework, a Real-Data Provenance Audit, and a Preliminary Multi-Field Test Against Cat WISE2020/unTimely

This paper presents a validated statistical framework and a transparent, partially executed real-data audit to investigate whether underestimated proper-motion uncertainties in CatWISE2020 are caused by epoch-level astrometric contamination rather than false cross-epoch associations, ultimately finding heterogeneous results across three test fields that neither confirm nor refute the proposed mechanism under the study's strict pre-registered decision rules.

Ritwik Kumar2026-10-07
🔭 astrophysics

Deep Learning for f (T) Gravity: Joint PINN Reconstruction and MCMC Analysis of Data Sets

This paper proposes a unified framework combining Physics Informed Neural Networks (PINNs) with hybrid Maximum Likelihood and Bayesian MCMC analysis to non-parametrically reconstruct the f(T) gravity function from cosmic chronometer and Pantheon+ supernova data, providing robust parameter constraints and a rigorous statistical comparison against the standard ΛCDM model.

Priya Awasthi, R.K. Mishra2026-10-07
🔭 astrophysics

Forward synthesis of an extreme He I 10830 Å blueshifted profile during a solar flare

This paper reports the successful forward synthesis of an extreme He I 10830 Å blueshifted profile observed during an M4.5 solar flare using the GREGOR telescope's upgraded GRIS instrument, revealing that the profile arises from a nearly continuous distribution of chromospheric velocities along the line of sight rather than independent atmospheric structures.

Benedetta Gandolfi, Christoph Kuckein, Sergio Javier González Manrique, Juan Carlos Trelles Arjona, Manuel Collados, Iva (…)2026-10-06
🔭 astrophysics

Satellite-driven pathway to maintain the atmosphere of TNO 2002XV93 - intense dynamical processes in the outer Solar System

This paper proposes that an undetected satellite orbiting the small trans-Neptunian object 2002 XV93 generates sufficient tidal heating to sustain its observed atmosphere via cryovolcanism, a hypothesis that implies ongoing intense dynamical processes in the outer Solar System and offers specific observational tests to distinguish this mechanism from a recent impact.

Szilárd Csizmadia, Viktória Fröhlich2026-10-05
🔭 astrophysics

Probing the hidden nature of the universe by high energy physics simulations of Black Hole nucleosynthesis and Relativistic Jets

This study utilizes Geant4 simulations to propose that black holes act as energy-absorbing synthesis reactors driving cosmic expansion and inflation through nucleosynthesis up to Z=238, while relativistic jets from AGN may carry detectable signatures of these newly formed elements.

Pathma Liyanage, Janaka Adassuriya, Muditha Rathnayake, Chandana Jayaratne2026-10-05
🔭 astrophysics

Towards understanding the early kinematics of coronal mass ejections: Proba-3/ASPIICS observations of the 21 September 2025 event

This paper utilizes high-resolution ASPIICS observations from the Proba-3 mission, combined with multi-viewpoint data from Solar Orbiter and STEREO, to provide a continuous kinematic analysis of the 21 September 2025 coronal mass ejection from its low-corona initiation to middle-corona propagation, thereby bridging the observational gap between EUV imagers and conventional white-light coronagraphs.

Binal D. Patel, Andrei N. Zhukov, Marilena Mierla, Andreas Debrabandere, Sergei Shestov, Laurent Dolla, Bram Bourgoignie (…)2026-10-01
🔭 astrophysics

An emerging baryon cycle in a galaxy 500 million years after the Big Bang

JWST observations of the merging galaxy Gz9p3 at z=9.311z=9.311 reveal the emergence of a self-regulated baryon cycle just 500 million years after the Big Bang, characterized by merger-driven gas redistribution, intense star formation, and the onset of efficient stellar feedback that enriches the circumgalactic medium while remaining trapped within the host halo.

Xin Wang, Shengzhe Wang, Hang Zhou, Zhijie Qu, Zhaozhou Li, Yuxuan Pang, Qianqiao Zhou, Shouyi Wang, Yangyao Chen, Yugua (…)2026-09-29
🔭 astrophysics

Interplanetary scintillation observations and MHD simulation of successive coronal mass ejections in early May 2024

This study combines 327 MHz interplanetary scintillation observations and MHD simulations to characterize the large-scale, spatially extended density disturbances caused by successive coronal mass ejections in early May 2024, demonstrating that IPS can effectively detect such complex heliospheric structures prior to their arrival at Earth.

Kazumasa Iwai, Daikou Shiota, Ken’ichi Fujiki, Hirofumi Isogai2026-09-29