Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm41a1995c&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM41A-1995
Physics
[2134] Interplanetary Physics / Interplanetary Magnetic Fields, [2154] Interplanetary Physics / Planetary Bow Shocks, [2780] Magnetospheric Physics / Solar Wind Interactions With Unmagnetized Bodies, [6295] Planetary Sciences: Solar System Objects / Venus
Scientific paper
We present a multi-instrument study of a Hot Flow Anomaly (HFA) observed by the Venus Express spacecraft in the Venutian foreshock, expanding on an initial study by Slavin et al [2009] that employed magnetometer observations of an HFA-like event during the flyby of NASA's Messenger spacecraft. Whilst the Messenger events were indicative of an HFA, they were unable to demonstrate the unambiguous signatures of plasma heating or deflection due to the paucity of data. We examine the complex internal structure of a Venutian HFA on the 22nd of March 2008, incorporating both Venus Express magnetometer and ASPERA plasma observations to demonstrate the presence of plasma heating within one such event. Centered on an interplanetary discontinuity and bounded by shock, the properties of this event are consistent with those of HFA's observed at other planets within the Solar System. Finally, we present a discussion of the implications of an HFA on the planet Venus.
Barabash Stas
Boardsen Scott A.
Coates Andrew J.
Collinson Glyn A.
Masters Adam
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