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Poster (Scientific congresses and symposiums)
Highlights from two years of remote sensing at Mars with MAVEN’s Imaging Ultraviolet Spectrograph
Chaffin; Schneider; Deighan et al.
2017EGU conference
 

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Abstract :
[en] The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission’s Imaging Ultraviolet Spectrograph (IUVS) observes Mars in the far and mid ultraviolet (110-340 nm), investigating lower and upper atmospheric structure and indirectly probing neutral atmospheric escape. After two Earth years in orbit (one Mars year), IUVS has assembled a large quantity of data and made many discoveries, some of which we report here. Among the key results obtained by IUVS are: (1) discovery of the widespread occurrence of a diffuse proton aurora, representing a newly discovered means of energy deposition into the atmospheres of unmagnetized planets; (2) continued investigation of time-variability in H and O escape, which have dessicated the planet over its history; and (3) synoptic characterization of thermospheric variability and response to solar input. We will present an overview of these results and a discussion of their implications for the state of the atmosphere and its evolution.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Chaffin
Schneider
Deighan
Jain
McClintock
Stewart
Clarke
Holsclaw
Montmessin
Lefèvre
Chauffray
Stiepen, Arnaud ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Crismani
Mayyasi
Evans
Stevens
Yelle
Groller
Lo
Jakosky, Bruce M.
More authors (10 more) Less
Language :
English
Title :
Highlights from two years of remote sensing at Mars with MAVEN’s Imaging Ultraviolet Spectrograph
Publication date :
27 April 2017
Event name :
EGU conference
Event date :
du 24 au 28 avril 2017
Audience :
International
Available on ORBi :
since 27 April 2017

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