P21A-2077
Electric Mars: The first survey of Martian parallel electric fields.
Tuesday, 15 December 2015
Poster Hall (Moscone South)
Glyn Collinson, NASA Goddard Space Flight Center, Heliophysics Sci. Div., Greenbelt, MD, United States
Abstract:
We present the results of the first survey of parallel electric fields at Mars, using electron measurements from the MAVEN Solar Wind Electron Analyzer (SWEA), and the Magnetometer (MAG). We discuss three fields: (1) The first upper limit on the strength of the "Polar Wind" ambipolar electric field; (2) The "trans-terminator" field, a newly discovered electric force accelerating ions on closed field lines from day to nightside, and (3) possible signatures of very high strength electrostatic mirroring during the passage of a Coronal Mass Ejection.
