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.
This paper proposes a novel mechanism for tektite formation in deep-sea sediments, suggesting that water-induced MSW resonance in atmospheric neutrinos triggers localized radioactive decay and rapid melting, thereby offering an alternative to the controversial impact theory and explaining phenomena like the tektite age paradox and predicted ⁴⁰K isotope deficits.
This study utilizes Bayesian analysis with Gaussian Process Regression on the SPARC database to demonstrate that the observed preference for cored dark matter halo profiles over the cuspy NFW prediction is largely an artifact of unmodelled correlated data uncertainties, suggesting that resolving the Cusp-Core problem requires higher-resolution three-dimensional kinematic modeling rather than improved one-dimensional curve fitting.
This paper introduces a leakage-controlled benchmark for forecasting GOES soft X-ray and proton flux using multi-step regression, revealing that while a segment-recurrent model minimizes global error, it fails to capture impulsive events at longer horizons, performing no better than simple persistence baselines for extreme space-weather conditions.
This paper proposes that self-interacting dark matter can naturally explain the existence of "Little Red Dots" by enabling the early formation of black hole seeds through gravothermal collapse and their subsequent rapid growth to supermassive scales via super-Bondi dark matter accretion, all occurring before the formation of substantial stellar hosts.
This paper proposes a scalar-extended gravity theory linking a non-minimally coupled scalar field to varying Higgs and neutrino masses, finding that while it can explain late-time cosmic acceleration, viable cosmological models constrained by quasar data require the neutrino mass variation to remain comparatively suppressed.
This paper proposes a structure-motivated phantom-crossing dark energy model, where the dark energy density scales with the mass-weighted rms dark matter acceleration, and demonstrates that joint constraints from DESI DR2, supernovae, and growth data support a scenario linking the cosmic coincidence, the crossing, and dark energy-matter equality to a single density maximum around .
This paper presents a sensitivity analysis of five SPH simulations for the DART impact on Dimorphos, revealing how matrix cohesion, tension, and impact offset significantly influence momentum enhancement and ejecta mass while identifying unresolved numerical and observational uncertainties that currently preclude a defensible production posterior or Hera forecast.
By analyzing long-term optical and mid-infrared variability of the isolated post T Tauri star RZ Psc, the study reveals a consistent 800K dust temperature and a 14.2-year optical cycle driven by submicron dust, suggesting the features originate from a primordial disk wind rather than collisions in a debris disk.
This study demonstrates that energetic processing of the interstellar molecule ethanolamine in astrophysical ices efficiently generates amino acids, dipeptides, and cyclodipeptides, revealing a viable non-aqueous pathway for prebiotic chemical evolution prior to planetary accretion.
This study resolves the controversy over the lunar inner core's existence by demonstrating that an iron-carbon alloy with a specific high-pressure phase (fcc-II) matches observed seismic velocities, thereby confirming a solid inner core composed of Fe-C with temperatures likely below 1500 K.