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Martian Thermospheric Response to an X8.2 Solar Flare on 10 September 2017 as Seen by MAVEN/IUVS

Authors :
Meredith Elrod
M. S. Chaffin
Gregory M. Holsclaw
Edward Thiemann
Franck Montmessin
Phillip C. Chamberlin
Matteo Crismani
John Clarke
Bruce M. Jakosky
A. I. F. Stewart
Franck Lefèvre
Nicholas M. Schneider
Francis G. Eparvier
J. S. Evans
Arnaud Stiepen
Sonal Jain
William E. McClintock
Michael H. Stevens
Justin Deighan
Daniel Lo
Laboratory for Atmospheric and Space Physics [Boulder] (LASP)
University of Colorado [Boulder]
Naval Research Laboratory (NRL)
NASA Goddard Space Flight Center (GSFC)
Laboratoire de Physique Atmosphérique et Planétaire (LPAP)
Université de Liège
Lunar and Planetary Laboratory [Tucson] (LPL)
University of Arizona
Center for Space Physics [Boston] (CSP)
Boston University [Boston] (BU)
PLANETO - LATMOS
Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS)
Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)
Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
Source :
Geophysical Research Letters, Geophysical Research Letters, American Geophysical Union, 2018, 45 (15), pp.7312-7319. ⟨10.1029/2018GL077731⟩, Geophysical Research Letters, 2018, 45 (15), pp.7312-7319. ⟨10.1029/2018GL077731⟩
Publication Year :
2018
Publisher :
HAL CCSD, 2018.

Abstract

International audience; We report the response of the Martian upper atmosphere to a strong X‐class flare on September 10, 2017 as observed by the Imaging Ultraviolet Spectrograph (IUVS) instrument aboard the Mars Atmosphere Volatile EvolutioN (MAVEN) mission. The solar flare peaked at 16:24 hrs UT and IUVS dayglow observations were taken about an hour after the flare peak. Retrieved temperatures from IUVS dayglow observations show a significant increase during the flare orbit, with a mean value of ∼270 K and a maximum value of ∼310 K. The retrieved temperatures during the flare orbit also show a strong latitudinal gradient, indicating that the flare induced heating is limited between low‐ and mid‐latitudes. During this event IUVS observed an ∼70% increase in the observed brightness of CO2+ Ultraviolet Doublet and CO Cameron band emission at 90 km, where high‐energy photons (< 10 nm) deposit most of their energy.

Details

Language :
English
ISSN :
00948276 and 19448007
Database :
OpenAIRE
Journal :
Geophysical Research Letters, Geophysical Research Letters, American Geophysical Union, 2018, 45 (15), pp.7312-7319. ⟨10.1029/2018GL077731⟩, Geophysical Research Letters, 2018, 45 (15), pp.7312-7319. ⟨10.1029/2018GL077731⟩
Accession number :
edsair.doi.dedup.....c76268e2c5a0ecb25190a37d894a44c3
Full Text :
https://doi.org/10.1029/2018GL077731⟩