1406 papers
This paper utilizes hydrodynamical simulations to demonstrate that galaxy-halo connection parameters, 2D projection effects, and velocity field treatments significantly bias the interpretation of Sunyaev-Zel'dovich signals around galaxies, thereby necessitating careful modeling to accurately constrain gas thermodynamics and feedback processes.
This paper demonstrates that a first-order cosmological phase transition occurring between 1 GeV and $10^6\gamma$-ray telescope constraints, with the specific outcomes depending on the fraction of kinetic energy converted into magnetohydrodynamic turbulence.
This paper demonstrates that within a general class of gravity models, particularly the Starobinsky model, the positive values of the scalar field arising from the conformal transformation provide an additional suppression mechanism for the massless modes of higher-rank antisymmetric tensor fields, thereby explaining their observational absence in the present universe.
This paper presents the first Far-UV spectrum of the T-Tauri star TW Hya obtained by the UVIT/AstroSat, demonstrating its capability to derive accretion parameters and characterize young stellar variability consistent with literature and previous space-based observatories.
This study utilizes combined cosmological datasets (BAO, CC, SNIa, and growth rate data) to constrain viscous fluid models within various gravity frameworks, finding that while exponential and logarithmic models are statistically rejected, the non-viscous power-law model remains a robust alternative to CDM.
This paper demonstrates that strong correlations between the trace and traceless parts of the energy shear tensor in positive-definite matrices allow for a refined parameterization of the initial energy overdensity, thereby explaining scatter in collapse thresholds and enabling accurate predictions of protohalo properties.
This paper presents a data-driven multilateration method that utilizes the arrival times of the first inverse beta decay neutrino events across multiple detectors, combined with a reference lightcurve from a larger detector, to rapidly estimate the direction and generate probability skymaps for Galactic core-collapse supernovae without relying on simulations.
This paper presents optical and infrared observations of the peculiar stripped-envelope supernova SN 2022jli, which exhibits a double-peaked light curve with periodic 12.5-day undulations and late-time dust emission, suggesting a scenario where a neutron star formed in a binary system powers the secondary maximum through accretion while potentially linking magnetar activity to broader features in stripped-envelope supernovae.
This paper proposes that large-scale magnetic dynamos in accretion disks generate quasi-periodic, outward-moving temperature fluctuations that successfully explain the observed UV/optical variability of AGNs, including their damped-random-walk characteristics and specific scaling relations with wavelength and black hole mass, which cannot be accounted for by reverberation models or spatially uncorrelated fluctuations.
The StarWhisper Telescope system is an AI agent framework that automates end-to-end astronomical observations by integrating large language models with specialized workflows to autonomously plan observations, analyze data, and trigger follow-ups, thereby reducing human intervention and demonstrating scalable potential for future large-scale telescope arrays.
This study utilizes JWST/NIRSpec IFU and ALMA observations to characterize the interstellar medium properties, gas-phase metallicity, and tidal interactions within the two distinct cores of the massive merging galaxy system B14-65666 at z=7.152, revealing its unique evolutionary pathway compared to typical high-redshift galaxies.
This paper proposes that the quasi-steady radio emission from repeating fast radio bursts originates from a magnetar wind nebula interacting with supernova ejecta, successfully modeling the observed fluxes for different sources using rotation-powered or magnetar-flare-powered neutron star scenarios with specific ages, magnetic fields, and progenitor types.
Using the IllustrisTNG hydrodynamical simulation, this study demonstrates that galaxy assembly bias varies significantly with selection criteria, number density, and redshift, cannot be fully captured by a single secondary halo property, and arises from the interplay between halo assembly bias and occupancy variation, for which the authors propose a fast analytical prediction method.
This paper introduces a novel "thermodynamic forcing" method implemented in particle-in-cell simulations to systematically model transport in weakly collisional plasmas, revealing that heat-flux saturation under multiple macroscopic gradients is mediated by the bulk-velocity-gradient-driven electron firehose instability rather than the temperature-gradient-driven whistler instability.
This paper presents a systematic method using astrometric data to identify 4,062 new quasar pair candidates within 100 kpc of known quasars, significantly expanding the available sample for studying quasar interactions and galaxy evolution.
This paper presents a statistically significant sample of 1,220 quasar pairs and candidates compiled from DESI DR1, which includes 1,020 confirmed pairs and a notable wide-separation quadruply lensed quasar candidate, providing a crucial dataset for studying galaxy mergers and black hole growth.
JWST observations of the massive ultra-compact galaxy GS-9209 at reveal it to be a fast-rotating system with low dark matter content, suggesting that early quenching was a dynamically gentle process that preserved stellar discs in these rare objects.
This paper reviews the unique data analysis challenges of the Taiji space-based gravitational wave mission and introduces the Taiji Data Challenge II alongside the open-source Triangle toolkit, which together provide a high-fidelity simulation platform to bridge the gap between theoretical objectives and realistic detection pipelines.
The paper introduces AGNBoost, an efficient XGBoostLSS-based machine learning framework that leverages JWST NIRCam and MIRI photometry to robustly identify active galactic nuclei and estimate redshifts, demonstrating high accuracy and generalizability across simulated, template-based, and real observational datasets.
This paper investigates ghost-free cubic Poincaré gauge gravity within flat FLRW cosmology, demonstrating that its new dynamical degrees of freedom lead to faster expanding universes with matter content estimates consistent with the standard model across two distinct hypermomentum conservation scenarios.