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 · 43 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.EP2026

ESCAPE: a small explorer mission to study the stellar drivers of exoplanet evolution

Allison Youngblood, Kevin France, Brian Fleming +37

The long-term stability of exoplanetary atmospheres depends critically on the extreme-ultraviolet (EUV) photon and high-energy particle fluxes from the host star, which are poorly…

astro-ph.EP2025★ 2 cited

Separating flare and secondary atmospheric signals with RADYN modeling of near-infrared JWST transmission spectroscopy observations of TRAPPIST-1

Ward S. Howard, Adam F. Kowalski, Michael Radica +10

Although TRAPPIST-1's temperate planets have the highest transmission signals of any known system, flares contaminate 50-70% of transits at the 1000 ppm level, far above 100 ppm se…

astro-ph.SR2025

The Atmospheric Response to Large Electron Beam Fluxes in Solar Flares III: Comprehensive Modeling of the Brightest Observed Near-Ultraviolet Continuum Source in an X9 Solar Flare

Adam F. Kowalski

I report on the high resolution spectra of the remarkable X9 solar flare of 2024 Oct 03 (SOL2024-10-03T12:08) and evaluate the extent to which nonthermal electron beams that genera…

astro-ph.SR2024

Evolution of Flare Activity in GKM Stars Younger than 300 Myr over Five Years of TESS Observations

Adina D. Feinstein, Darryl Z. Seligman, Kevin France +2

Stellar flares are short-duration ( hours) bursts of radiation associated with surface magnetic reconnection events. Stellar magnetic activity generally decreases as a function…

astro-ph.SR2023★ 41 cited

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

Yuta Notsu, Adam F. Kowalski, Hiroyuki Maehara +12

We conducted the time-resolved simultaneous optical spectroscopic and photometric observations of mid M dwarf flare stars YZ CMi, EV Lac, and AD Leo. Spectroscopic observations wer…

astro-ph.IM2023

The Focusing Optics X-ray Solar Imager (FOXSI)

Steven Christe, Meriem Alaoui, Joel Allred +26

FOXSI is a direct-imaging, hard X-ray (HXR) telescope optimized for solar flare observations. It detects hot plasma and energetic electrons in and near energy release sites in the…