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Journal Articles Geophysical Research Letters Year : 2022

Empirically Determined Auroral Electron Events at Mars—MAVEN Observations

Shaosui Xu
  • Function : Author
David L. Mitchell
  • Function : Author
James P. Mcfadden
  • Function : Author
Nicholas M. Schneider
  • Function : Author
Zachariah Milby
  • Function : Author
Sonal Jain
  • Function : Author
Tristan Weber
  • Function : Author
David A. Brain
  • Function : Author
Gina A. Dibraccio
  • Function : Author
Jasper Halekas
Suranga Ruhunusiri
  • Function : Author
Robert J. Lillis
  • Function : Author
Ben Johnston
  • Function : Author


Discrete aurorae have been observed at magnetized planets such as Earth and Jupiter, triggered by accelerated electrons. Similar aurorae have also been observed at Mars with only localized strong crustal magnetisms. However, our understanding of this phenomenon at Mars is still limited. In particular, direct and quantitative comparisons of the auroral and its source electron events are lacking as these two types of observations are usually made at different times and/or locations. In this study, we establish empirical criteria to select electron events ("auroral electrons") that could trigger detectable auroral emissions with Mars Atmosphere and Volatile EvolutioN measurements, thereby enabling a direct statistical comparison. We find auroral electrons share similar statistical characteristics to those previously reported for discrete auroral events. This study bridges the gap between electron observations and auroral detections and enables collaborations across different Mars missions, as well as comparative planetary studies of discrete aurora.
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Dates and versions

insu-03672041 , version 1 (19-08-2022)





Shaosui Xu, David L. Mitchell, James P. Mcfadden, Nicholas M. Schneider, Zachariah Milby, et al.. Empirically Determined Auroral Electron Events at Mars—MAVEN Observations. Geophysical Research Letters, 2022, 49, ⟨10.1029/2022GL097757⟩. ⟨insu-03672041⟩
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