Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby.

Details Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby. Modeling of the Interaction Between the Induced Magnetosphere of Venus and the Solar Wind During the MESSENGER Flyby.

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufm.p41b..07b&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #P41B-07

Physics

2780 Solar Wind Interactions With Unmagnetized Bodies, 6295 Venus, 7829 Kinetic Waves And Instabilities

Scientific paper

MESSENGER's second flyby of Venus on 5 June 2007 represents one of the key events in the spacecraft's journey toward Mercury. The favorable geometry of MESSENGER's trajectory and the presence of Venus Express in orbit around the planet provided a unique opportunity to make multi-point observations of solar wind interactions with Venus. To help understand the data gathered during this important milestone, we modeled the induced magnetosphere of Venus and its interaction with the solar wind at the time of the MESSENGER encounter with the planet. This paper reports the results of this modeling effort, shows the ionospheric conditions encountered by MESSENGER and Venus Express at the time of the flyby, and provides a comparison with the Magnetometer instrument data. Our model uses the capabilities of the time-dependant multi-fluid magnetohydrodynamic (MHD) numerical code that was developed during the past few years to study the interaction of the solar wind with unmagnetized bodies. This code is based on a three-fluid approach where ions, neutrals, and electrons are considered as separate interacting fluids. The MHD equations relative to these three fluids are solved using an adaptive Cartesian grid that is refined or relaxed as needed.

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