1088 papers
This paper introduces the first Mock Data Challenge for the Einstein Telescope, detailing a simulated dataset of compact binary coalescences and Gaussian noise designed to test analysis pipelines, while providing a tutorial to facilitate community preparation for the observatory's future operations.
This paper presents high-fidelity mock galaxy catalogs for DESI's Bright Galaxy Survey (BGS) and Luminous Red Galaxy (LRG) samples, generated via subhalo abundance matching on the Uchuu simulation, which successfully reproduce observed redshift evolution, clustering statistics, and galaxy-halo connections with high accuracy.
The paper introduces , a differentiable, JAX-based framework that utilizes neural network emulators to accelerate one-loop EFTofLSS galaxy power spectrum calculations by 3–4 orders of magnitude while maintaining high accuracy, thereby enabling rapid and efficient cosmological inference for upcoming large-scale structure surveys.
This paper presents comprehensive GRMHD simulations with angle-discretized radiation transport showing that super-Eddington accretion onto stellar-mass black holes consistently forms radiation-pressure-supported thick disks with low efficiency due to outflows, where the presence of strong jets driven by high spin and magnetic flux can clear the funnel to enable beamed radiation escape, while weak jets result in obscured flows with distinct observational signatures applicable to ultraluminous X-ray sources and other transient systems.
This paper extends the macroscopic effective-surface model of neutron stars to rotating systems by deriving analytical expressions for angular momentum and adiabatic moments of inertia within General Relativity, revealing that strong gravity and surface correlations significantly constrain the accessible neutron star radii.
This paper introduces and validates two efficient "kurto spectra" estimators that compress the high-dimensional parity-odd trispectrum of galaxy clustering into one-dimensional observables, demonstrating their ability to detect parity violation in cosmological surveys by effectively mitigating noise through phase-matched subtraction and optimal weighting in both dark matter and halo fields.
This study utilizes 3D soft-sphere coagulation simulations to demonstrate that higher temperatures and polydisperse monomer size distributions lead to denser, more compact dust aggregates, while also evaluating the reliability of eight structural metrics and identifying the average number of contact points as the least effective measure.
This paper presents an analytical framework for early supernova emission from shock interaction with extended material, demonstrating that current optical observations suffer from significant parameter degeneracies—particularly in inferring the material's radius—while highlighting the critical role of future UV and X-ray missions like ULTRASAT in resolving these uncertainties.
This paper reformulates the Press-Schechter approach for primordial black holes within the excursion-set framework to demonstrate that, unlike halo formation, the non-Markovian nature of the process invalidates the standard "fudge factor" correction, necessitating a consistent inclusion of both stochastic motion components to derive a physically valid mass function.
This paper demonstrates that the threshold for primordial black hole formation in a radiation-dominated universe depends not only on the compaction function but also on the spatial curvature of the core, leading to a trichotomy of initial conditions (open, closed, or flat) that significantly influence formation probabilities, mass spectra, and the potential connection to Type-II black holes and the NanoGrav signal.
This paper theoretically demonstrates that primordial black holes acting as dark matter lenses can induce significant, frequency-dependent distortions in the stochastic gravitational-wave background, offering a novel method to constrain their mass and abundance through future observations.
Observations of the supernova remnant IC 443 by the Large High Altitude Air Shower Observatory (LHAASO) reveal high-energy gamma-ray emission extending beyond 30 TeV without a cutoff, providing compelling evidence that supernova remnant shocks can efficiently accelerate cosmic rays to sub-PeV energies.
This paper reports the successful development and testing of a large-area, optical-readout Time Projection Chamber that achieves high-precision directional imaging of low-energy electron recoils (10–60 keV), demonstrating its potential to extend X-ray polarimetry to higher energies for studying rapid astrophysical transients.
This paper proposes that exoplanets in the habitable zone can naturally evolve into retrograde rotation through a smooth, non-catastrophic process where atmospheric torques eventually overcome tidal torques, causing a bifurcation from synchronous rotation similar to the mechanism believed to have reversed Venus's spin.
This paper analytically derives and models the maximum offset of binary neutron star mergers from their host galaxies, finding it scales inversely with the seventh power of the host's escape velocity to aid in identifying hosts for non-coincident merger events.
This paper proposes a unified thermodynamic framework where cosmic acceleration emerges from an entropic force driven by a generalized mass-to-horizon scaling relation, and demonstrates through a comprehensive Bayesian analysis of multi-probe observational data that this entropic cosmology is statistically preferred over the standard CDM model.
This paper establishes theoretical mass limits for compact objects in deformed Hořava-Lifshitz gravity, demonstrating that both the uniform density and causal sound speed bounds converge at the extremal black hole horizon () within the Kehagias-Sfetsos vacuum solution.
This paper theoretically catalogs and quantifies the diffraction effects, interference patterns, and stellar diameter influences on central flashes during stellar occultations by solar system objects, providing specific analytical models for flash height and width under various atmospheric and observational conditions.
This study investigates dust attenuation and star formation rates in extragalactic structures formed by different interaction mechanisms, finding that despite their distinct origins, ram-pressure stripped tails and gravitationally induced rings or tidal tails exhibit notably similar dust content and star formation activity.
This study employs chemical kinetics models to demonstrate that an enhanced carbon-to-oxygen (C/O) ratio is necessary to explain the observed hydrocarbon-rich chemistry in the inner disks of very low-mass stars, although a degeneracy between the C/O ratio and stellar X-ray luminosity remains.