1419 papers
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.
This paper reports the third epoch of ESPRESSO observations of quasar J052915.80-435152.0, yielding a null redshift drift measurement consistent with CDM predictions and demonstrating that while current instrumentation requires century-long baselines for detection, a combined ESPRESSO and ANDES effort could achieve the first detection before 2080.
This paper proposes that negative superhumps in cataclysmic variables are driven by retrograde apsidal precession of an eccentric disk, a mechanism that explains their prevalence across various mass ratios and accretion states without requiring a long-lived disk tilt.
Using 30 years of GONG helioseismic data, this study reveals that the solar tachocline's jump, width, and position exhibit latitude-dependent temporal variations linked to solar activity cycles, with the tachocline moving deeper at low latitudes as overall solar complexity decreases, suggesting a role for magnetic fields in confining the layer.
This study presents the first systematic analysis of optical polarisation angle variability in a sample of 12 tidal disruption events, revealing that the observed rapid and non-uniform changes in polarisation angle contradict simple axisymmetric models and instead support scenarios involving evolving, non-axisymmetric geometries and shocks.
This study reports the detection of an exceptionally rapid jet component (apparent speed ~60–80c) in the blazar PKS 0215+015, ejected coincident with a high-energy neutrino event, suggesting that neutrino production occurs via proton-photon interactions within a fast-moving feature interacting with a quasi-stationary shock.
By combining asteroseismic age estimates with chemical abundance data from APOGEE, Gaia, and Kepler, this study reveals that most nitrogen-rich field stars are likely too young to have originated from globular clusters, suggesting their enrichment instead stems from binary interactions or mergers rather than cluster ejection.
This paper describes the development, implementation, and performance assessment of a low-latency data pipeline and workflow for the Gravitational-wave Optical Transient Observer (GOTO) that enables the rapid discovery, reporting, and characterization of astrophysical transients within approximately seven minutes of observation.
This paper investigates the pitch-angle distributions of electrons accelerated by relativistic magnetically dominated turbulence, demonstrating that while numerical noise can significantly distort small pitch angles, specific techniques can mitigate these challenges to yield results consistent with existing phenomenological models.
This paper presents observations and a magnetic-reconnection scenario of a twin pair of atypical solar flares occurring on April 22, 2022, in a quadrupolar magnetic configuration, where sequential brightening of flare kernels along quasi-separatrix layers suggests that nearly simultaneous slipping reconnections within two distinct quasi-separatrix layers drove the homologous events.
This paper proposes a new paradigm where planets in tight binary systems form concurrently with the secondary star via gravitational fragmentation of massive circumstellar discs, explaining the observed prevalence of gas giants over low-mass planets through a process where early-formed, massive fragments survive inward migration while lower-mass objects are typically ejected as free-floating planets.