173 papers
This review traces the evolution of understanding s-process nucleosynthesis in low-mass AGB stars from early nuclear systematics to modern stellar modeling, highlighting how observational constraints necessitated a shift from the high-temperature Ne(,n)Mg neutron source to the low-temperature C(,n)O reaction as the primary mechanism for synthesizing elements between Sr and Pb.
This study utilizes high-resolution observations from the Goode Solar Telescope and SDO/HMI to reveal that the fine structure of a bipolar light bridge in NOAA AR 13663 consists of 100–150 km penumbral-like filaments with stable red- and blueshifted patterns, forming through the converging and shearing interaction of oppositely polarized sunspots.
This study demonstrates the feasibility of using BlackGEM's ground-based multi-colour photometry to identify pulsation modes in the hot pre-white dwarf PG 1159-035 through amplitude-ratio analysis, paving the way for large-scale asteroseismic characterization of faint compact pulsating stars.
This paper confirms the six-year persistence of highly coherent 25.01-hour and 23.1-minute periodic signals in the white dwarf WD 1054-226, revealing a stable, optically thick, edge-on debris ring that serves as a key laboratory for studying remnant planetary systems.
This paper presents a new likelihood-based method using James Webb Space Telescope photometry of brown dwarf cooling sequences to determine globular cluster ages with high precision, while analyzing key systematic uncertainties and providing observational guidelines for future studies.
This study demonstrates that convolutional neural networks can accurately predict star cluster ages from broadband imaging by identifying physically meaningful, age-dependent environmental cues in the surrounding interstellar medium, particularly for young clusters where traditional color-based methods face limitations.
This study utilizes data-driven magnetofrictional simulations to demonstrate that the November 28, 2023, eruption from solar active region 13500 was triggered by the progressive injection of magnetic helicity and energy, which formed a twisted flux rope that became torus-unstable when the ratio of current-carrying to total relative helicity reached a critical threshold of 0.30.
This paper demonstrates that a discrete polarimetric tomography method, when applied to synthetic multi-spacecraft white-light images, effectively reconstructs the 3D density structure and front location of coronal mass ejections with higher accuracy using polarimetric data and at least four observing spacecraft compared to non-polarimetric approaches.
This paper proposes that the unique characteristics of supernovae like SN 2021yfj, which interact with dense silicon- and sulfur-rich circumstellar matter, can be explained by the merger of two white dwarfs where a hybrid white dwarf's outer layers are tidally stripped to form the surrounding shell.
The paper reports that comet 3I/ATLAS, originating from another planetary system, exhibits a deuterium-to-hydrogen ratio in its water exceeding Earth's ocean values by over 40 times and typical Solar System cometary values by over 30 times, indicating its water formed under significantly colder and less irradiated conditions than those found in our own solar system.
This paper enhances the reliability of solar flare regression by applying conformal prediction to deep learning models, demonstrating that conformalized quantile regression outperforms alternative methods in achieving valid coverage rates and favorable interval lengths for space weather forecasting.
Using the high-quality 100-parsec Gaia DR3 white dwarf sample and advanced population synthesis models, this study derives a stringent upper limit on the axion-electron coupling ( at 95% C.L.), effectively ruling out the previously suggested range of couplings that implied axion-induced cooling.
This paper presents a comprehensive revision of the rigid-wavefunction approach for calculating hydrogen photoionization in magnetized media, providing explicit expressions for transition probabilities and occupation numbers that reveal significant modifications to absorption opacities and pronounced dichroic features even at magnetic field strengths below 10 MG.
This paper presents multi-wavelength observations of the young eruptive star IRAS 21204+4913, which brightened by approximately 5 magnitudes since October 2025 due to a massive accretion outburst, exhibiting unique spectral features, high polarization from an expanding dusty shell, and a historical 1948 outburst.
This paper utilizes wave energy relations to demonstrate that strong non-adiabatic effects cause convective modes to abruptly transition from monotonically growing to oscillatory behavior, where entropy energy functions as potential energy and overlaps with gravity energy.
This study employs comprehensive Monte Carlo simulations to demonstrate that uncertainties in nuclear reaction rates can induce multi-peak abundance distributions for specific isotopes in Type I X-ray bursts, while also refining the identification of key reactions for future research.
This study characterizes the bright K-dwarf system TOI-5789, revealing a mutually inclined architecture with four planets including a promising sub-Neptune (TOI-5789 c) ideal for atmospheric studies, while ruling out an outer giant planet as the cause of the system's dynamical tilt.
By modeling Active Region 12760 with the GX Simulator, the authors demonstrate that while a specific power-law heating model fits EUV intensities, the underestimation of emission in cooler bands reveals that the upper transition region of peripheral loops extends significantly beyond the foot points, necessitating its inclusion in future solar heating models.
This paper demonstrates that the previously reported gravitational anomaly in wide binaries, which supported Modified Newtonian Dynamics, is likely an artifact of orbital modeling choices, as a hierarchical Bayesian analysis accounting for three-dimensional orbital elements yields results consistent with standard Newtonian gravity.
This study utilizes LAMOST DR10 spectra cross-matched with Gaia and SDSS data to identify 63 isolated magnetic white dwarfs, including 32 new discoveries, demonstrating the survey's capability to characterize magnetic fields via Zeeman splitting and expand the known population for future follow-up.