1420 papers
This paper presents the first high-resolution (1 kpc) measurement of the HI column density distribution function at down to , revealing a high covering fraction of neutral gas within 1 kpc of Milky-Way-like galaxies and providing new constraints on baryonic flows and galaxy evolution.
This paper presents an end-to-end simulation and data-processing framework for four-station 21CMA digital beamforming experiments, demonstrating the feasibility of adapting established calibration and imaging strategies to this mode while characterizing instrumental systematics like two-stage channelization effects.
Using ALMA Band 3 observations, this study reports the detection of two compact molecular absorption features near the M87 nucleus and extended perpendicular absorption structures, suggesting origins in dense molecular fragments feeding the supermassive black hole and shock-compressed regions associated with the jet.
This paper hypothesizes that ionic liquids and deep eutectic solvents, due to their unique physical properties like low vapor pressure and wide liquid temperature ranges, could serve as stable, non-aqueous solvents enabling prebiotic chemistry and potentially supporting life in diverse planetary environments where liquid water cannot exist.
This study utilizes \ixpe observations of Cen X-3 to reveal complex, energy-dependent polarization angle variations that are reconciled through a two-component model involving a phase-dependent scattering component in the disk wind, suggesting that wind properties modulated by pulse phase significantly alter the observed X-ray polarization.
Using the L-Galaxies-BH semi-analytical model and Millennium simulations, this study reveals that the origins of overmassive and undermassive black holes are not uniform but depend on galaxy mass and redshift, arising from a complex interplay of enhanced merger histories, environmental stellar mass reduction, gravitational-wave recoils, and quiescent evolutionary paths.
This paper presents and validates advanced optical turbulence profiling techniques for the SHIMM Shack-Hartmann instrument, including Z-tilt weighting functions and exposure time corrections, which demonstrate high accuracy in retrieving turbulence profiles and parameters through end-to-end Monte Carlo simulations.
This paper constrains a diffusive dark fluid cosmological model using Planck 2018 CMB and DESI DR2 BAO data, finding that the model yields Hubble constant values consistent with Planck measurements and demonstrates distinct effects on cosmic evolution and structure formation compared to the standard CDM model.
This paper analyzes how molecular absorption and Rayleigh scattering affect Cherenkov light transmission at the CTAO observatory, using simulations to propose an atmospheric monitoring and calibration strategy that mitigates systematic uncertainties for high-energy gamma-ray astronomy.
This study validates the radial velocities of 134 high-velocity stars from Gaia DR3 using ground-based spectroscopy, confirming that most are genuine accreted objects on retrograde orbits associated with past merging events while identifying a contamination rate of spurious measurements in the low signal-to-noise regime.
This paper reviews the physics of dark matter halo collapse and the resulting stratified structure defined by multiple boundaries—such as the splashback, depletion, and turnaround radii—that characterize ongoing halo growth, while also introducing a Python package called SpheriC to implement the underlying spherical collapse models.
This study analyzes 54 Type Ia supernovae to reveal that the timing of their near-infrared secondary maximum exhibits a luminosity-dependent structure that significantly differs between host galaxies of early and late morphological types, offering critical insights for refining supernova distance calibrations in cosmology.
This paper investigates how integrating Artificial Intelligence and Space Robotics into lunar science exploration and human spaceflight support can accelerate sustainable lunar presence and future interplanetary missions by enabling autonomous infrastructure development, resource utilization, and enhanced astronaut safety.
By combining Gaia DR3-based classification of stellar populations in the Fimbulthul tidal stream with N-body simulations, this study finds no significant radial gradient in metallicity within Centauri and proposes a new formation scenario where the metal-rich population was not centrally concentrated.
This paper presents numerical simulations demonstrating that while high-power wind accretion from eruptive massive primaries can significantly alter the mass of eccentric-orbit companions without causing thermal expansion, the inclusion of the companion's own wind and longer orbital periods substantially reduces or even reverses accretion efficiency.
This paper presents a novel data-driven methodology using Local and Global Deformation Map-based Dynamic Mode Decomposition (DMD) to approximate nonlinear chaotic transitions in periapsis Poincaré maps via linear operators, enabling efficient trajectory prediction and the design of ballistic transfers to the Moon within the circular restricted three-body problem.
This paper introduces a new morpho-kinematic classification scheme for late-type galaxies based on the two-dimensional spatial distribution of stellar specific angular momentum, revealing distinct evolutionary sequences and dynamical mechanisms that reshape galaxies depending on their mass and structural features.
This paper reviews the dynamical, thermodynamic, and observational consequences of tilted, warped, and eccentric disks in accreting systems around black holes and compact stars, covering precession mechanisms, system manifestations, theoretical and numerical results, and potential links to quasi-periodic oscillations.
This study utilizes a pebble-driven core accretion population synthesis model, constrained by homogenized radial velocity survey data, to demonstrate that assuming higher accretion rates and shorter disk lifetimes around more massive stars successfully reproduces the observed peak in giant planet occurrence around 1.7–2 solar mass stars.
This paper proposes a new disc-corona model featuring a transition radius that shrinks as the mass accretion rate declines, successfully explaining the observed long-term X-ray spectral hardening in tidal disruption events like AT 2019azh.