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The Dungey Model of the Magnetosphere, and Astro‐Geophysical Current Sheets
Author(s) -
Speiser Theodore W.
Publication year - 1971
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs006i002p00315
Subject(s) - current sheet , magnetosphere , magnetopause , geophysics , interplanetary magnetic field , physics , current (fluid) , interplanetary spaceflight , polar , magnetic field , plasma sheet , ring current , field (mathematics) , magnetohydrodynamics , computational physics , mechanics , solar wind , astronomy , quantum mechanics , thermodynamics , mathematics , pure mathematics
By the addition of an interplanetary magnetic field in various orientations to a closed magnetosphere model, the Dungey model was generated for all orientations other than a strictly northward interplanetary magnetic field. Particles can be accelerated in both the dayside magnetopause current sheet and in the tail current sheet, but there are inherent asymmetries. Particles may have asymmetric access to the north or the south polar caps, depending on the interplanetary field orientation. The breakdown of the usual adiabatic theory is discussed for a model current sheet.