1409 papers
This paper reports the first sub-solar mass compact binary search using LIGO's O4a data, which found no significant candidates but established the tightest constraints to date on merger rates and local dark matter fractions, significantly improving upon previous limits from earlier observing runs and microlensing surveys.
This paper presents a new, computationally efficient subgrid framework implemented in the {\sc arepo} code that successfully models Population III feedback and metal enrichment in early universe simulations, demonstrating convergence in star formation rates and metal distribution at high redshifts.
ALMA Band 9 observations of the MC 27/L1521F protostar reveal a previously undetected warm, dense, off-centered ring structure traced by high-excitation CO(6-5) emission, providing new insights into shock-heating and gas-magnetic field interactions during the earliest stages of star formation.
This paper presents multi-wavelength radio observations of interstellar comet 3I/ATLAS that reveal a high CO/H₂O ratio and demonstrate that sublimation from an extended source within the coma accounts for up to 80% of the observed water production during its pre-perihelion phase.
This paper presents the first systematic catalogue of simultaneous solar transits of Phobos and Deimos from the Martian surface between 1600 and 2600 CE, identifying 8,565 grazing, 49 partial, and 17 full double transit events that are geometrically constrained to the Martian equator and equinoxes, while providing precise predictions for future occurrences and updated uncertainty estimates pending the JAXA MMX mission.
This paper demonstrates that in Rastall gravity, the non-minimal coupling between matter and geometry significantly alters the collapse threshold and exponential abundance of primordial black holes, establishing them as sensitive probes for testing modified gravity theories within current cosmological constraints.
Using dispersion measures from 171 Fast Radio Bursts intersecting the Andromeda galaxy's halo compared to a control sample, this study constrains the mass of M31's ionized circumgalactic medium to approximately $1.86 \times 10^{11} M_\odot$, demonstrating the efficacy of FRBs as a tool for probing the baryon content of galactic halos.
This study reconstructs and analyzes the first four ground-level enhancements (GLEs) from the 1940s by digitizing forgotten cosmic-ray data, revealing distinct temporal evolution patterns and spectral hardness characteristics for these historically missing events.
Based on a 45-year radial velocity survey of 625 stars in the Hyades cluster, this study characterizes the binary population by determining a 40% binary frequency, updating orbital parameters for over 100 systems, revising the tidal circularization period to approximately 5.9 days, and measuring the cluster's velocity dispersion and stellar gravitational/convective shifts.
This paper investigates the redshift dependence of the Hubble constant using binned Type Ia supernova data within the flat CDM framework, comparing logarithmic and power-law parameterizations that agree at low redshifts but diverge significantly when extrapolated to early cosmic epochs like BBN and inflation, with the logarithmic form predicting a finite redshift where the Hubble parameter vanishes while the power-law form approaches zero asymptotically.
This paper reports the discovery of LCEz4-M1, the highest-redshift Lyman continuum emitter candidate to date at , which exhibits a high escape fraction of ionizing photons likely driven by its compact starburst nature and potential minor interactions within an overdense environment.
The paper introduces -EFTCAMB, a publicly available, Cobaya-integrated Python extension of EFTCAMB that enables robust cosmological testing of arbitrary covariant Horndeski gravity theories through both EFT mapping and direct scalar field equation solving, the latter of which remains valid even in regimes where the EFT approach fails.
This paper presents new long-slit stellar kinematics and triaxial Schwarzschild modeling for a sample of 21 Brightest Cluster Galaxies, revealing the presence of eight ultramassive black holes, diverse dark matter halo geometries, and specific kinematic features such as low central velocity dispersions and a kinematically decoupled core.
This paper presents an automated pre-selection method that more than doubles the known sample of Counter-Rotating Disk galaxies in MaNGA DR17 to 126 confirmed cases, while revealing that their emission-line diagnostics do not differ significantly from early-type galaxies, thereby enabling more robust statistical studies of their formation and evolution.
This paper predicts that upcoming Gaia data releases will detect tens to hundreds of circumbinary planets, revealing a yield significantly lower than pre-launch estimates but highly sensitive to the underlying mass and orbital period distributions, while also offering the potential to validate or refute candidates around post-common-envelope binaries.
This study presents the first end-to-end quantitative calculation of the expected Quasi Periodic Eruption (QPE) rate within the impact model, demonstrating that the predicted number density of QPEs—ranging from $10^{-12}10^{-6} \rm Mpc^{-3}$ depending on orbital parameters—depends critically on the interplay between tidal disruption events and extreme mass-ratio inspirals interacting with accretion disks.
This study bridges the long-standing Prandtl number gap in 3D simulations of thermohaline convection by demonstrating that the chemical mixing model of Brown, Garaud, & Stellmach (2013) remains valid across stellar regimes down to , thereby ruling out the Prandtl number discrepancy as the cause of tensions between the model and astronomical observations.
This paper reports the discovery of broad, high-velocity circumstellar gas absorption features around the white dwarf WD J0234-0406, marking it as the second such system after WD 1145+017 but distinguished by the absence of rapid brightness variations or dramatic spectral changes despite the presence of circumstellar dust.
This study utilizes a state-of-the-art MHD-kinetic heliosphere model to demonstrate that the heliosphere's magnetic field significantly influences galactic cosmic rays, successfully reproducing the observed harder energy spectrum in the TeV-scale "Region A" of the sky.
This paper presents a publicly released synthetic spectral library of optically thick atmospheres tailored for Little Red Dots, demonstrating that their observed spectral features—specifically the SED curvature, H kink, and Ca II triplet—indicate low photospheric densities and super-Eddington accretion, thereby challenging standard active galactic nucleus models and offering a new method to probe central engine masses.