1371 papers
This paper introduces STRIDE, a novel streaming-based dedispersion algorithm that generates per-pixel time series from interferometric images by partitioning dispersive sweeps across both time and frequency dimensions, thereby drastically reducing memory requirements and enabling efficient transient searches for low-frequency widefield interferometers like the MWA and SKA-Low.
This paper proposes a data-driven "structured generalized sliced Wasserstein distance" method using randomized neural networks to directly analyze two-dimensional polarized images from Gas Pixel Detectors, successfully determining X-ray polarization and incident angles while demonstrating high consistency with traditional statistical models.
This paper introduces a new local four-velocity gauge-like symmetry for imperfect fluids with vorticity, utilizing a tetrad formulation to construct invariant stress-energy tensors and demonstrating their application in simplifying neutron star models.
The paper proves that for spherically symmetric hairy black holes satisfying the weak energy condition, the ratio of the shadow radius to the horizon radius is bounded from below by $3\sqrt{3}/2$, a limit that is saturated by the Schwarzschild black hole.
This paper benchmarks pre-main sequence stellar evolutionary tracks by comparing HR diagram-derived masses with dynamical masses from ALMA disk observations of Upper Scorpius stars, finding that models with moderate spot coverage best match the data and that incorporating dynamical mass priors significantly reduces age scatter and improves model consistency.
Using deep JWST imaging, researchers detected and characterized mature intracluster light in the distant galaxy cluster XLSSC 122 at z ~ 2, revealing that the buildup of intracluster stars was already well underway by this epoch and providing new insights into the early dynamical evolution of massive halos.
By analyzing kinematic asymmetries in approximately 6,700 MaNGA galaxies, this study reveals that environmental quenching in satellites is primarily driven by rapid gas stripping and subsequent starvation leading to compact, undisturbed structures, whereas central galaxies are quenched through internal AGN feedback and merger-driven growth.
By combining cosmological simulations with JWST mock observations, this study reveals that while galaxy mergers significantly trigger AGN activity in gas-poor environments, their observational detection via morphological signatures is hindered at higher redshifts, underscoring the necessity of integrating realistic simulations with observational data to fully understand the AGN-merger connection.
This study utilizes end-to-end simulations of CHEX-MATE-like galaxy clusters to demonstrate that while current X-ray analysis techniques can robustly recover gas density and mass profiles, they face significant challenges and potential biases in accurately measuring temperature profiles due to azimuthal variations and multi-temperature gas along the line of sight.
This paper proposes utilizing the line-of-sight shear of strong gravitational lenses detected in Stage-IV surveys as a new cosmological probe, demonstrating through analytical derivations and covariance analysis that this approach significantly enhances the standard $3\times 26\times 2$pt scheme with high signal-to-noise ratio and potential for mitigating systematic errors.
This study demonstrates that late infall onto protoplanetary disks can generate distinct spiral structures observable in scattered light and CO line emission, with gradual gas accretion producing well-defined two-armed spirals and active streamer accretion creating flocculent patterns, while noting that these surface-level perturbations generally do not significantly disrupt the midplane unless the infalling mass rivals the disk mass.
This paper demonstrates that a small mismatch between the standard analytic sound-horizon scale and the effective scale imprinted in matter clustering can introduce significant systematic biases in cosmological inference for future high-precision surveys like DESI, and proposes strategies to correct for or budget this effect.
The STIS team has updated the on-orbit sensitivity curves for the instrument's echelle modes following Servicing Mission 4 by utilizing improved CALSPECv11 flux models for the G 191-B2B standard star and releasing new blaze shift coefficients and ripple tables.
This study demonstrates that homogeneous asteroseismic modeling of eight metal-poor, -enhanced evolved stars yields consistent fundamental properties regardless of whether -enhancement is treated fully or via ad hoc metallicity corrections, while also confirming a breakdown of the scaling relation at low metallicities that necessitates detailed modeling for accurate mass and age determinations.
Using IXPE observations of the 2025-2026 outburst, this study reports the discovery of significant, strong energy-dependent X-ray polarization in the black hole binary GS 1354-64 during an intermediate state, revealing a ~4% polarization degree that increases to ~11% at higher energies and providing new insights into the accretion geometry and coronal structure of black hole X-ray binaries.
This study utilizes the latest DESI DR2 BAO and cosmic chronometer data to constrain time-varying vacuum CDM models, finding that observations strongly favor the standard CDM limit while significantly reducing parameter degeneracies and alleviating the Hubble tension.
This paper presents a multidisciplinary design optimization framework using OpenMDAO and Dymos that simultaneously optimizes low-thrust trajectories and spacecraft power systems for asteroid orbit insertion, explicitly coupling variable-specific impulse Hall thruster performance with time-varying solar power availability to overcome the limitations of traditional simplifying assumptions.
This study analyzes ACS/WFC bias frames to determine that read noise exhibits no column dependence but is influenced by row number due to accumulated dark current, while also finding that physical pre-scans have lower noise than science arrays, amplifiers A and C show an initial linear noise decrease, and masking hot pixels reduces column noise.
This study demonstrates that approximately 90% of Milky Way open clusters, particularly those with fewer than 250 stars, align with the radial acceleration relation and baryonic Tully-Fisher relation with an acceleration scale consistent with MOND predictions, suggesting that low-acceleration gravitational dynamics operate on parsec scales within the Galaxy.
This paper presents the Cataclysmic Variable Confident Catalogue (CCC), a comprehensive dataset of orbital periods for 910 cataclysmic variables and candidates derived from TESS observations, which validates existing measurements, corrects discrepancies, and provides new period determinations for the broader population.