5 papers · 1 filter
Refinements to the Solar Polar Magnetic Flux: Implications from Inversion Methodologies
Bryan Yamashiro, Xudong Sun, Ivan Milić +6
The magnetic fields in the solar polar region are important to our understanding of the internal dynamo process, the global coronal structure, and the origin of the solar wind. The…
Analyzing the Morphology of Late-phase Stellar Flares From G-, K-, and M-type Stars
Denise G. Yudovich, Kai E. Yang, Xudong Sun
Stellar flares occasionally present a light curve morphology, consisting of an initial impulsive phase followed by a gradual late phase. Analyzing this specifi…
Spectropolarimetric Inversion in Four Dimensions with Deep Learning (SPIn4D): I. Overview, Magnetohydrodynamic Modeling, and Stokes Profile Synthesis
Kai E. Yang, Lucas A. Tarr, Matthias Rempel +8
The National Science Foundation's Daniel K. Inouye Solar Telescope (DKIST) will provide high-resolution, multi-line spectropolarimetric observations that are poised to revolutioniz…
Stellar Flares Are Far-Ultraviolet Luminous
Vera L. Berger, Jason T. Hinkle, Michael A. Tucker +6
We identify 182 flares on 158 stars within 100 pc of the Sun in both the near-ultraviolet (NUV: 1750-2750 Å) and far-ultraviolet (FUV: 1350-1750 Å) using high-cadence light curves…
A Possible Mechanism for "Late Phase" in Stellar White-Light Flares
Kai E. Yang, Xudong Sun, Graham S. Kerr +1
M-dwarf flares observed by the \textit{Transiting Exoplanet Survey Satellite} (\textit{TESS}) sometimes exhibit a "peak-bump" light-curve morphology, characterized by a secondary,…