Interaction of the solar wind with magnetized asteroids

Details Interaction of the solar wind with magnetized asteroids Interaction of the solar wind with magnetized asteroids

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..521b&link_type=abstract

In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed

Computer Science

Asteroids, Solar Wind

Scientific paper

We use a 2-D hybrid code (fluid electrons, particle ions) to simulate the interaction of the solar wind with a magnetized asteroid. The asteroid field is taken as a dipole with different strengths. For a small magnetic moment a whistler wake is generated. Stronger dipoles generate a magnetosonic perturbation. We compare simulation results with the signatures observed by Galileo near Gaspra and Ida. When the IMF is 90° to the solar wind flow, the wake is downstream from the asteroid, and is formed by whistler and magnetosonic waves. When the IMF is ≍45° to the flow, part of the wake is upstream. From the discrepancies found between observations and simulations we conclude that signatures near Gaspra and Ida were not generated by the solar wind interaction with magnetized asteroids.

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