864 papers
Using exact non-Gaussian consistency diagnostics on CMB, BAO, and supernova data, this study finds that while Gaussian metrics may overstate tensions, both the standard CDM and its sign-switching extension CDM show excellent consistency between observations, with the latter offering modest geometric improvements at intermediate redshifts.
Using a three-dimensional global climate model, this study reveals that atmospheric collapse on tidally-locked exoplanets can paradoxically sustain dayside surface liquid water by weakening day-night heat transport, thereby preventing the loss of dayside insolation to the nightside despite the reduction in greenhouse warming.
This paper presents the first systematic search for low-mass-ratio planets () in the re-reduced 2023 KMTNet microlensing data, identifying three strong planet candidates including KMT-2023-BLG-0164, whose host system was characterized via spectroscopy despite being projected on a bright foreground star.
This paper presents a multi-wavelength study of radio sources in the globular cluster M22, identifying VLA22 as a promising quiescent stellar-mass black hole candidate that aligns with retention models, while also highlighting other potential black hole and jet-emitting sources requiring further confirmation.
This study utilizes rotational broadening measurements from LAMOST spectra to determine orbital inclinations and companion masses for ten compact object candidates, revealing five systems with unseen companions likely to be neutron stars or massive white dwarfs, including two potential Type Ia supernova progenitors.
This study presents HI observations of 19 giant low surface brightness galaxies, revealing asymmetric gas disks and low gas content that, when compared with NIHAO simulations showing similar features in merger remnants, suggests these galaxies' extended optical disks may have formed following recent major mergers.
This study validates a method for estimating circumsolar sky brightness by demonstrating quantitative agreement between direct coronagraphic measurements and aerosol-inferred radiance at Mauna Loa, thereby enabling multi-decadal analysis of daytime coronal observing conditions using AERONET data.
This paper presents a robust Weighted Polynomial Distortion Correction in 2-Phase (WPDC-2P) method that significantly enhances astrometric precision for the Chinese Space Station Survey Telescope (CSST) by combining distance-based weighting, look-up tables, and polynomial fitting to effectively correct geometric distortions up to 200 pixels, achieving sub-pixel accuracy in both simulated and real-world observations.
Using follow-up timing observations from the FAST telescope, this study determines that the pulsar PSR J0630+19 is too old and lacks sufficient spin-down luminosity to power the very-high-energy gamma-ray emissions of the source 3HWC J0630+186, thereby ruling out an association between them.
This paper reports the detection of high-energy gamma-ray emission up to 100 GeV from a stacked sample of 330 gamma-ray bursts using Fermi-LAT data, revealing that while individually detected bursts align with standard afterglow models, individually undetected bursts suggest the presence of a previously unobserved energy injection effect in the GeV band.
This paper presents a multi-layer perceptron model based on The Payne to characterize the instrumental profile of the LAMOST telescope, demonstrating that applying this derived profile to stellar radial velocity measurements reduces dispersion by approximately 3 km/s and thereby enhancing the search for long-period binary stars.
This paper analyzes a large sample of nova decline times to establish bidirectional power-law relationships between the and parameters, ultimately finding that is approximately half of within the derived uncertainties.
This paper presents an enhanced deep learning framework, POLISH, which utilizes patch-wise training and nonlinear intensity transformations to achieve robust, high-dynamic-range, wide-field radio interferometric imaging, demonstrating its ability to significantly increase the discovery rate of strong gravitational lenses compared to traditional methods.
This paper investigates the dynamical behavior of steady spherical accretion and thin accretion disks around a magnetically charged black hole embedded in perfect fluid dark matter, using M87* shadow observations to constrain parameters and revealing that while local radiative flux and temperature are reduced, the overall radiative efficiency and luminosity are enhanced compared to a Schwarzschild black hole.
By applying modern brown dwarf evolution models that account for cloud formation and deuterium burning, this study reveals that these factors significantly extend the duration planets can remain in the habitable zone and create specific "sweet spots" near the deuterium-burning limit, correcting previous estimates based on simpler analytic approximations.
This paper presents a time-dependent photospheric radiative transfer model coupling 2D SRHD simulations with Monte Carlo photon propagation to demonstrate how jet angular structure, pair loading, and dissipation depth jointly regulate the spectral evolution and polarization signatures of gamma-ray bursts, offering testable predictions for high-energy polarimeters.
This paper reports the discovery of two low-mass-ratio microlensing planets and analyzes a "central-resonant" degeneracy in high-magnification events, categorizing it into two distinct types based on mass ratio and source radius to guide future solution identification.
To overcome queue time limits on the Lomonosov-2 supercomputer that caused premature termination of extensive air shower simulations with Cherenkov light for the SPHERE-3 project, the authors developed and validated a multithreaded parallel version of the CORSIKA code.
This paper presents a multi-level parallel software pipeline that achieves linear scaling for SPHERE-3 detector simulations by leveraging the natural atomicity of independent event processing across CORSIKA, Geant4, and Python-based image approximation stages without requiring locks on hot paths.
This paper summarizes the outcomes of a workshop held at the Lorentz Center seven years after the discovery of the Gaia Phase Spiral, aiming to consolidate current knowledge, identify open questions regarding the Galactic disk's response to perturbations, and invite the broader community to collaborate on ongoing research projects.