1861 papers
Astro-Ph — Co explores the cosmic origins of matter, diving into how the universe began and evolved from the Big Bang. This field investigates the fundamental forces and particles that shaped galaxies, stars, and the very fabric of space-time, offering a window into the earliest moments of existence.
On Gist.Science, we process every new preprint in this category as it appears on arXiv, ensuring you stay ahead of the curve without needing to decode dense academic jargon. Each paper is transformed into both a plain-language summary for general understanding and a detailed technical breakdown for researchers, bridging the gap between complex data and clear insight.
Below are the latest papers in cosmology and early universe physics, curated directly from the most recent submissions to arXiv.
This paper extends force-free magnetosphere studies to rotating Kerr black holes by explicitly constructing the electromagnetic field and its backreaction on spacetime via linearized Einstein equations, revealing significant modifications to accretion disk observables and jet-launching mechanisms.
By correcting a systematic underestimation of supernova brightness in high-mass calibration galaxies through a revised extinction model that adopts a Milky Way-like distribution, this study lowers the derived Hubble constant to km/s/Mpc, thereby reducing the Hubble tension from to .
This paper reviews and extends the conservation laws and dynamical equations of relativistic magnetohydrodynamics in an expanding, radiation-dominated early Universe, presenting new results on conformal invariance, scaling behaviors, transport coefficients, and wave propagation while adapting the Boris correction for relativistic Alfvén speeds.
This paper introduces and compares two rapid methods for reconstructing Sunyaev-Zel'dovich effect fields on -body simulations, demonstrating that a Gaussian Process transfer function approach excels for highly correlated fields while Hybrid Effective Field Theory is superior for enhancing weaker correlations.
This paper demonstrates that the accuracy of astrophysical parameter constraints derived from 21CMMC analysis of the Epoch of Reionization is highly sensitive to the agreement between the bubble-finding algorithm used in the mock data and the one employed in the sampling model, thereby highlighting the need for model-independent analysis techniques.
This paper proposes a one-loop radiative neutrino mass model featuring singlet-doublet dark matter and -odd scalars, demonstrating that quartic Higgs-scalar interactions can induce a first-order phase transition producing observable gravitational waves while simultaneously satisfying constraints from neutrino mass, the muon anomalous magnetic moment, and lepton flavor violation.
The SEEDZ simulations reveal that massive black holes at cosmic dawn grow rapidly to M via super-Eddington accretion before self-regulating through feedback that evacuates host halos, implying that observed high-redshift galaxies likely formed through a two-step process of quenching followed by baryonic reconstitution, and that black hole masses at are fundamentally capped by feedback efficiency and halo binding energy.
This paper proposes that a matter-free, three-torus universe driven by Casimir energy can evolve from a Planck-scale origin to a present size consistent with cosmic microwave background anomalies, provided specific parameters regarding particle content, inflation, and reheating are met.
This paper presents a comprehensive evaluation of the OpenGadget3 GPU port, demonstrating excellent accuracy compared to its CPU counterpart across various cosmological and hydrodynamic tests while achieving chip-to-chip speedups of approximately 2–5 on four different supercomputers.
This paper presents a general analytic framework that unifies freeze-in, ultra-relativistic freeze-out, and standard freeze-out mechanisms for dark matter production during non-instantaneous reheating, deriving critical temperature exponents and analytic relic yields that explain how varying reheating histories shift microscopic interactions between these distinct regimes.