TY  - JOUR
A1  - Ilin, Ekaterina
A1  - Poppenhäger, Katja
A1  - Alvarado-Gómez, Julián David
T1  - Localizing flares to understand stellar magnetic fields and space weather in exo-systems
T2  - Astronomische Nachrichten = Astronomical notes
N2  - Stars are uniform spheres, but only to first order. The way in which stellar rotation and magnetism break this symmetry places important observational constraints on stellar magnetic fields, and factors in the assessment of the impact of stellar activity on exoplanet atmospheres. The spatial distribution of flares on the solar surface is well known to be nonuniform, but elusive on other stars. We briefly review the techniques available to recover the loci of stellar flares, and highlight a new method that enables systematic flare localization directly from optical light curves. We provide an estimate of the number of flares we may be able to localize with the Transiting Exoplanet Survey Satellite, and show that it is consistent with the results obtained from the first full sky scan of the mission. We suggest that nonuniform flare latitude distributions need to be taken into account in accurate assessments of exoplanet habitability.
KW  - stars
KW  - activity - stars
KW  - flare - stars
KW  - magnetic fields - methods
KW  - data
KW  - analysis
Y1  - 2022
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/58788
SN  - 1521-3994
VL  - 343
IS  - 4
PB  - Berlin
CY  - Wiley-VCH
ER  -