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The magnetic field on the magnetospheric boundary from laboratory simulation data
Author(s) -
Podgorny I. M.,
Dubinin E. M.,
Potanin Yu. N.
Publication year - 1978
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl005i003p00207
Subject(s) - magnetosphere , physics , geophysics , convection , magnetopause , field line , mach number , magnetic reconnection , plasma , interplanetary magnetic field , magnetic field , mechanics , solar wind , computational physics , quantum mechanics
A simulation experiment has studied the magnetospheric boundary for high Alfven Mach numbers. The artificial magnetosphere was produced as a result of interacting a supersonic and super‐Alfvénic flow of collisionless plasma with the magnetic field of a dipole. In the presence of southward magnetic field components, a "visor" forms at the day side in the plasma flow, preventing reconnection at the front side of the magnetosphere. Field lines of the plasma flow envelop the polar cap, forming the mantle. In the presence of northward field components the convection in the polar cap is sunward, while with southward components convection is antisunward. Simultaneously with the convection caused by reconnection, convection due to viscous interaction is observed along the boundary, and clearly in the region of closed field lines.