An MHD Model for a Heliospheric Current Sheet

Details An MHD Model for a Heliospheric Current Sheet An MHD Model for a Heliospheric Current Sheet

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004arep...48..433p&link_type=abstract

Astronomy Reports, vol. 48, Issue 5, p.433-438

Astronomy and Astrophysics

Astronomy

Scientific paper

A numerical solution of the full set of MHD equations shows the generation of a heliospheric current sheet during the thermal expansion of the corona. Calculations were performed for a compressible plasma taking into account dissipative terms and anisotropy of the thermal conductivity of the magnetized plasma. It is shown that the current sheet is not magnetically neutral. The sheet contains a normal component of the magnetic field, which plays a fundamental role during the formation of the sheet and in the stationary state. The sheet is stable against MHD perturbations, which are apparently carried away by the plasma flow. For the numerical scheme chosen, the minimum sheet thickness is determined by the length of the spatial integration step. The PERESVET code was used for the calculations.

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