🔭 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

Mass and energy cascade in self-gravitating collisionless dark matter flow

This paper utilizes Illustris and Virgo simulations to demonstrate that self-gravitating collisionless dark matter flow exhibits a fundamental mass and energy cascade from large to small scales, which drives a statistically steady state characterized by scale-independent rates, self-similar halo structures, and universal density profiles derived from Fokker-Planck equations describing random walks in mass and particle space.

Zhijie Xu2026-07-30
🔭 astrophysics

Low-energy, three-dimensional, symmetric jumping Trojan trajectories for the exploration of the Earth-Moon triangular libration point regions

This paper comprehensively investigates low-energy, symmetric, three-dimensional jumping Trojan trajectories in the Earth-Moon system that ballistically transfer between tadpole orbits around triangular libration points, establishing new criteria for orbit classification and a strategy for selecting candidates for exploring potential Kordylewski dust clouds.

Kenta Oshima2026-07-29
📄 other

Reconstructing the Antikythera Mechanism’s Front Cover Plate Text and Predicting Planetary Positions and Phases

This paper presents a reconstruction of the lost Front Cover plate text of the Antikythera Mechanism, identifying it as an independent observational astronomy work from circa 180 BC that served as an essential ephemeris for predicting planetary positions and phases without requiring additional mechanical components.

Aristeidis Voulgaris, Maria K. Papathanassiou, Christophoros Mouratidis, Andreas Vossinakis2026-07-27
📄 other

Investigation of an X1.5 Class Solar Flare Associated with a 3D Null - QSL System in NOAA Active Region 13006

This study investigates the X1.5-class solar flare in NOAA Active Region 13006, revealing that the event was triggered by slipping magnetic reconnection within a circular quasi-separatrix layer and subsequent reconnection at a 3D null point, which transformed a sheared arcade into an erupting flux rope beneath a fan-spine magnetic topology.

Divya Kumari, Pawan Kumar, Sanjay Kumar, Sadashiv ., Alok Ranjan Tiwary2026-07-24
🔭 astrophysics

Localized Angular-Momentum Conservation as an Equivalent Force for Galaxy Rotation Curves

This paper proposes that localized angular-momentum conservation in galactic disks generates an equivalent force, described by a specific analytical formula with fixed parameters, which successfully reproduces observed galaxy rotation curves and matches the predictive accuracy of baryonic Tully-Fisher relations without invoking new microscopic forces or replacing cosmological dark matter.

Guojun Pan2026-07-23
🔭 astrophysics

Spectral analysis of a single Type III burst in the wide frequency range of 0.3 -19 MHz according to PSP observations

This paper analyzes a single Type III solar radio burst observed by the Parker Solar Probe across 0.3–19 MHz, confirming theoretical predictions regarding beam-plasma structure velocities and validating Newkirk density models and Elgaroy-Lingstad duration dependencies through detailed spectral and drift rate measurements.

Valentin Melnik, Volodymyr Dorovskyy2026-07-23
🔭 astrophysics

CosmoFit: A Graphical User Interface for Bayesian Cosmological Parameter Estimation with User-Defined H(z) Models

This paper introduces CosmoFit, a transparent and reproducible graphical user interface that simplifies Bayesian cosmological parameter estimation by enabling users to define custom expansion histories and run Markov chain Monte Carlo analyses with standard observational datasets, while achieving accuracy comparable to direct command-line implementations.

GIOVANY CRUZ HUERFANO2026-07-23
🔭 astrophysics

Volume scattering of radar signals is not a single diagnostic indicator of water ice within permanently shadowed regions near the lunar poles

This paper argues that the proposed radar polarization thresholds for detecting subsurface water ice in lunar permanently shadowed regions are not definitive, as the observed signal variations can be fully explained by near-surface roughness, and robust evidence for thick ice requires a more comprehensive combination of polarization metrics and correlation with shadowed terrain.

sriram saran, Tathagata Chakraborty, Bradley Thomson, Edgard G. Rivera-Valentin, Raghav Mehra, Deepak Putrevu2026-07-23