activity
20232026
most citedAPO & SMARTS flare star campaign observations I. Blue wing asymmetries in chromospheric lines during mid M dwarf flares from simultaneous spectroscopic and photometric observation data

41 citations · 86 across the 14 of their papers we have counts for

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astro-ph.SR2025★ 3 cited

XRISM view of a stellar flare: High-resolution Fe K spectra of HR 1099, an RS CVn-type star

Miki Kurihara, Masahiro Tsujimoto, Michael Loewenstein +21

A high-resolution X-ray spectroscopic observation was made of the RS CVn-type binary star HR 1099 using the Resolve instrument onboard XRISM for its calibration purposes. During th…

astro-ph.SR2025

Origin of the stellar Fe Kα line clarified with FUV and X-ray observations of a superflare on the RS Canum Venaticorum-type Star UX Arietis

Shun Inoue, Wataru Buz Iwakiri, Tomoki Kimura +11

Fluorescence line diagnostics of the Fe Kα line at keV observed in both solar and stellar flares can constrain the latitude and size of the flare loop, even in the absen…

astro-ph.SR2025

Eclipsing Stellar Flare on the Demon Star Algol Binary System Observed during the MAXI-NICER Follow-up Campaign in 2018

Kazuya Nakayama, Wataru Buz Iwakiri, Teruaki Enoto +6

Algol is a well-known eclipsing binary hosting an active and variable star that exhibits frequent stellar flares. Here, we report our pre-planned and coordinated rapid X-ray follow…

astro-ph.SR2025

High-Resolution Modelling of Coronae and Winds in Solar-type Stars with Varying Rotation Rates I. X-ray Coronae

Yue-Hong Chen, Julián D. Alvarado-Gómez, Xin Cheng +8

Stellar coronae are believed to be the main birthplace of various stellar magnetic activities. However, the structures and properties of stellar coronae remain poorly understood. U…

astro-ph.SR2025

Systematic NICER study of the low-ionized Fe K line on RS Canum Venaticorum type stars

Shun Inoue, Teruaki Enoto, Yuta Notsu +4

The Fe K fluorescence line ( keV) has been observed during solar and stellar flares. Two emission mechanisms of the Fe K line, photoionization and collisional ioniz…