Extreme Space Weather at Venus and Mars: What We Know and Don't Know (Yet) (Invited)

Details Extreme Space Weather at Venus and Mars: What We Know and Don't Know (Yet) (Invited) Extreme Space Weather at Venus and Mars: What We Know and Don't Know (Yet) (Invited)

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh52a..04l&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH52A-04

Other

[7900] Space Weather, [7974] Space Weather / Solar Effects, [7999] Space Weather / General Or Miscellaneous

Scientific paper

The atmospheres of our unmagnetized planetary neighbors, Venus and Mars, experience extreme space weather unfiltered by a sometimes protective planetary field. While there are standard ionosphere reactions to the XUV photon enhancements associated with major flares, the effects of particles and fields are not so terrestrial-like and can last several days following the events on the Sun. Unfortunately detailed information about these responses at Venus and Mars are very limited, in part by the fact that the instruments to make some of the needed observations are either absent or inadequate on missions designed for other purposes, while others are compromised by the disturbed conditions themselves. In addition, the connections of planetary responses with the solar/interplanetary causes is often difficult to establish with available heliospheric monitors. This presentation summarizes the current state of our understanding based on the existing observations during two major event periods: The October- November 2003 period, and the December 2006 period when Venus Express and/or Mars Express were in orbit. We also consider what was learned from the solar cycle-long PVO mission, and the potential for improving our state of knowledge during the upcoming solar maximum with VEX, MEX and MAVEN.

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