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- Title
Martian Thermospheric Response to an X8.2 Solar Flare on 10 September 2017 as Seen by MAVEN/IUVS.
- Authors
Jain, S. K.; Deighan, J.; Schneider, N. M.; Stewart, A. I. F.; Evans, J. S.; Thiemann, E. M. B.; Chaffin, M. S.; Crismani, M.; Stevens, M. H.; Elrod, M. K.; Stiepen, A.; McClintock, W. E.; Lo, D. Y.; Clarke, J. T.; Eparvier, F. G.; Lefévre, F.; Montmessin, F.; Holsclaw, G. M.; Chamberlin, P. C.; Jakosky, B. M.
- Abstract
Abstract: We report the response of the Martian upper atmosphere to a strong X‐class flare on 10 September 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 hr 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 middle latitudes. During this event IUVS observed an ∼70% increase in the observed brightness of CO 2 + ultraviolet doublet and CO Cameron band emission at 90 km, where high‐energy photons (< 10 nm) deposit most of their energy.
- Publication
Geophysical Research Letters, 2018, Vol 45, Issue 15, p7312
- ISSN
0094-8276
- Publication type
Article
- DOI
10.1029/2018GL077731