The solar wind interaction with Mars - Consideration of Phobos 2 mission observations of an ion composition boundary on the dayside

Details The solar wind interaction with Mars - Consideration of Phobos 2 mission observations of an ion composition boundary on the dayside The solar wind interaction with Mars - Consideration of Phobos 2 mission observations of an ion composition boundary on the dayside

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9611165b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, July 1, 1991, p. 11,165-11,174.

Other

35

Mars (Planet), Planetary Magnetospheres, Solar Planetary Interactions, Solar Wind, Ion Concentration, Phobos, Plasma Composition, Space Plasmas

Scientific paper

This paper describes the features of the boundary in the plasma ion composition near Mars which separates the region dominated by the solar wind protons from the plasma of planetary origin. This boundary was detected by the ASPERA experiment on Phobos 2. It is argued that the features of this boundary seem to be similar to those of other composition boundaries detected elsewhere: the cometopause near Comet Halley, and a boundary in the ion composition which appears near Venus during periods of high solar wind dynamic pressure. Numerical modeling of the solar wind interaction with Mars supports the idea that during solar maximum the interaction of the Martian neutral atmosphere with the solar wind can result in a composition transition from solar wind to planetary ions in the low-altitude magnetosheath. This transition occurs because of charge exchange of solar wind protons with the neutral atmosphere and photoionization.

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