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dc.contributor.authorJain, S. K.
dc.contributor.authorDeighan, J.
dc.contributor.authorSchneider, N. M.
dc.contributor.authorStewart, A. I. F.
dc.contributor.authorEvans, J. S.
dc.contributor.authorThiemann, E. M. B.
dc.contributor.authorChaffin, M. S.
dc.contributor.authorCrismani, M.
dc.contributor.authorStevens, M. H.
dc.contributor.authorElrod, M. K.
dc.contributor.authorStiepen, A.
dc.contributor.authorMcClintock, W. E.
dc.contributor.authorLo, D. Y.
dc.contributor.authorClarke, J. T.
dc.contributor.authorEparvier, F. G.
dc.contributor.authorLefévre, F.
dc.contributor.authorMontmessin, F.
dc.contributor.authorHolsclaw, G. M.
dc.contributor.authorChamberlin, P. C.
dc.contributor.authorJakosky, B. M.
dc.date.accessioned2019-01-03T18:13:06Z
dc.date.available2019-01-03T18:13:06Z
dc.date.issued2018-08-16
dc.identifier.citationJain, S. K., Deighan, J., Schneider, N. M., Stewart, A. I. F., Evans, J. S., Thiemann, E. M. B., et al. (2018). Martian thermospheric response to an X8.2 solar flare on 10 September 2017 as seen by MAVEN/IUVS. Geophysical Research Letters, 45, 7312–7319. https://doi.org/10.1029/2018GL077731en_US
dc.identifier.issn00948276
dc.identifier.doi10.1029/2018GL077731
dc.identifier.urihttp://hdl.handle.net/10150/631260
dc.description.abstractWe 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 similar to 270 K and a maximum value of similar to 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 similar to 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. Plain Language Summary We report here first observations of thermospheric response to an X8.2 class flare on Mars measured by Imaging Ultraviolet Spectrograph on board the Mars Atmosphere Volatile EvolutioN spacecraft. We found that thermospheric temperatures increased by (similar to)70 K at the time of the flare, although IUVS observations took place roughly 1 hr after the flare peak. The thermospheric temperatures retrieved by IUVS show that the flare-induced heating was limited to the low and middle latitudes only. This is the first reported observation of latitudinal extent of atmospheric heating caused by a solar X-class flare on Mars.en_US
dc.description.sponsorshipNASA; University of Colorado; NASA's Goddard Space Flight Centeren_US
dc.language.isoenen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.relation.urlhttp://doi.wiley.com/10.1029/2018GL077731en_US
dc.rights©2018. American Geophysical Union. All Rights Reserved.en_US
dc.subjectMarsen_US
dc.subjectX-class flareen_US
dc.subjectthermosphereen_US
dc.subjectsolar eventen_US
dc.titleMartian Thermospheric Response to an X8.2 Solar Flare on 10 September 2017 as Seen by MAVEN/IUVSen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben_US
dc.identifier.journalGEOPHYSICAL RESEARCH LETTERSen_US
dc.description.note6 month embargo; published online: 10 May 2018en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleGeophysical Research Letters
dc.source.volume45
dc.source.issue15
dc.source.beginpage7312
dc.source.endpage7319
refterms.dateFOA2018-11-10T00:00:00Z


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