Simulations of solar wind interactions with the terrestrial planets and asteroids: Recent achievements

Details Simulations of solar wind interactions with the terrestrial planets and asteroids: Recent achievements Simulations of solar wind interactions with the terrestrial planets and asteroids: Recent achievements

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsm34a..05o&link_type=abstract

American Geophysical Union, Spring Meeting 2007, abstract #SM34A-05

Physics

2700 Magnetospheric Physics (6939), 2724 Magnetopause And Boundary Layers, 2740 Magnetospheric Configuration And Dynamics, 2753 Numerical Modeling, 2756 Planetary Magnetospheres (5443, 5737, 6033)

Scientific paper

The interaction of the solar wind with magnetized planets and asteroids is examined using global hybrid simulations that treat ions kinetically through particle-in-cell methods and the electrons form a massless fluid. These simulations allow us to investigate the nature of the resulting magnetospheres whose sizes range from proton kinetic scales such as gyroradius and skin depth to much larger systems. For a given solar wind condition, the global properties of dipolar magnetospheres are found to increase in complexity with increasing dipole strength. In its simplest form, the magnetosphere consists of a whistler wake while magnetospheres larger than about 1/30 that of the Earth have terrestrial characteristics. In this talk, we review these results and their implications for magnetospheres of asteroids and the inner planets. We also examine the scaling properties of magnetospheric regions and processes such as the bow shock, magnetosheath, magnetopause and magnetic reconnection. The results indicate that while different regions and processes have differing scaling properties, for magnetospheres larger than 1/30 of the Earth the same basic processes are operative.

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