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Martian Thermospheric Response to an X8.2 Solar Flare on 10 September 2017 as Seen by MAVEN/IUVS
- 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.
- Subjects :
- Martian
Physics
010504 meteorology & atmospheric sciences
Solar flare
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
Atmosphere of Mars
Astrophysics
Mars Exploration Program
01 natural sciences
law.invention
Atmosphere
Geophysics
13. Climate action
law
0103 physical sciences
General Earth and Planetary Sciences
Ionosphere
Thermosphere
010303 astronomy & astrophysics
0105 earth and related environmental sciences
Flare
Subjects
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⟩