HR: 11:25h
AN: SH42A-05    [Abstracts]
TI: Ion flow in the Martian wake. One and half year of IMA (ASPERA-3, Mars Express) measurements.
AU: * Fedorov, A
EM: Andrei.Fedorov@cesr.fr
AF: CESR/CNRS, 9, av. Colonel Roche, Toulouse, 31028 France
AU: Sauvaud, J
EM: sauvaud@cesr.fr
AF: CESR/CNRS, 9, av. Colonel Roche, Toulouse, 31028 France
AU: Budnik, E
EM: Elena.Budnik@cesr.fr
AF: CESR/CNRS, 9, av. Colonel Roche, Toulouse, 31028 France
AU: Barabash, S
EM: stas@irf.se
AF: IRF, Box 812, Kiruna, S-98 128 Sweden
AU: Lundin, R
EM: rickard@irf.se
AF: IRF, Box 812, Kiruna, S-98 128 Sweden
AU: Acuna, M
EM: mario.acuna@nasa.gov
AF: GSFC, Code 695, Greenbelt, MD 20771 United States
AU: Mazelle, C
EM: mazelle@cesr.fr
AF: CESR/CNRS, 9, av. Colonel Roche, Toulouse, 31028 France
AB: We present the measurements performed by mass spectrometer IMA (ASPERA-3) onboard of the Mars Express mission during time interval from May 2004 up to August 2005. Existing IMA observations cover practically entire region 5 X 5 radii of Mars antisunward from the planet. This allows to define the total flux of the planetary origin ions escaping Mars. Also we can reconstruct the spatial distribution of the different species in the Martian wake. Unfortunately the IMA measurements lack the low energy part of ion distribution (less then 200 eV/charge). To calculate the missing ion flow we used theoretical models and data of the ASPERA instrument onboard of the Phobos mission. The present paper discuss all the difficulties arising when one is trying to calculate and integrate the ion flux measured in situ by one satellite. Finally we show the spatial distribution of the fluxes of O⁺, O_2⁺, and CO_2⁺ projected onto the plane perpendicular to the Sun - Mars axis.
DE: 2152 Pickup ions
DE: 6026 Ionospheres (2459)
DE: 6225 Mars
SC: SPA-Solar and Heliospheric Physics [SH]
MN: Fall Meeting 2005