Two-Dimensional MHD Simulations of the Solar Wind Interaction with Comet Halley

Details Two-Dimensional MHD Simulations of the Solar Wind Interaction with Comet Halley Two-Dimensional MHD Simulations of the Solar Wind Interaction with Comet Halley

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aca....48..803m&link_type=abstract

Acta Astronomica, v.48, pp.803-817, (1998).

Astronomy and Astrophysics

Astronomy

3

Solar Wind, Magnetohydrodynamics (Mhd), Comets: Individual: Halley

Scientific paper

Numerical simulations are performed in the framework of nonlinear two-dimensional magnetohydrodynamics to investigate the solar wind interaction with Comet Halley at 0.83 a.u. corresponding to the Vega2 encounter. The governing equations are solved by a flux corrected transport method. For a gas (water) production rate of 1030 molecules/sec, it was found that a weak bow shock is formed at about 0.5 million km upstream the comet nucleus while a contact surface and an inner shock are located at about 20000 km in the subsolar direction from the nucleus. We also found an enhancement of the ion-mass density just inside the contact surface, at the position of the inner shock. The model reasonably reproduced the locations of the bow shock and the diamagnetic cavity that were observed by recent missions to Comet Halley.

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