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Sunward flow in Jupiter's magnetosheath
Author(s) -
Siscoe G. L.,
Crooker N. U.,
Belcher J. W.
Publication year - 1980
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/gl007i001p00025
Subject(s) - magnetosheath , magnetopause , bow shock (aerodynamics) , jupiter (rocket family) , solar wind , jovian , physics , magnetosphere of jupiter , geophysics , bow wave , shock wave , geology , astronomy , plasma , planet , mechanics , saturn , space shuttle , quantum mechanics
The position of Voyager crossings of Jupiter's bow shock show a dependence on solar wind pressure to the −1/3 power. This dependence is used to calculate typical bow shock speeds of 50 km/s from Voyager solar wind plasma data. Since the bow shock and magnetopause move approximately in unison in response to solar wind pressure changes, the resulting movement of the magnetosheath at a sizeable fraction of the solar wind speed leads to reversed, sunward flow in large portions of the dayside region when the boundaries are expanding. Voyager 1 plasma data show evidence of such reversed flow.