Global 3-D Hybrid Simulations of Mars and the Effect of Crustal Magnetic Fields

Details Global 3-D Hybrid Simulations of Mars and the Effect of Crustal Magnetic Fields Global 3-D Hybrid Simulations of Mars and the Effect of Crustal Magnetic Fields

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufm.p42a0540b&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #P42A-0540

Physics

2431 Ionosphere/Magnetosphere Interactions (2736), 2459 Planetary Ionospheres (5435, 5729, 6026, 6027, 6028), 2756 Planetary Magnetospheres (5443, 5737, 6030), 2780 Solar Wind Interactions With Unmagnetized Bodies, 6225 Mars

Scientific paper

Mars is not protected from the solar wind by a strong intrinsic magnetic field. Further, Mars is a very small planet. These two aspects of Mars mean that the solar wind interaction with the planet is both direct and kinetic in behavior. The large gyroradius of the incoming solar wind and the large gyroradius of the pick up ions make the solar wind interaction with Mars very unique. Over the years the authors using a 3-D kinetic hybrid particle code have studied this planet. Mars Global Surveyor has produced many exciting discoveries. Probably the most significant and unexpected was the presence of the crustal magnetic fields on the surface of the planet. The presence of these strong crustal fields suggests that the solar wind interaction with Mars will be altered. In fact, it suggests that the loss rate of pick up ions and the shape of the Martian magnetosphere will be substantially changed. Results will be presented from our latest 3-D hybrid particle code simulations of Mars where models for the crustal magnetic field have been inserted into the simulations. Particular emphasis will be placed on changes to the magnetic field topology and the change in the rate of pick up ions.

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