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Slow shocks around the Sun
Author(s) -
Whang Y. C.
Publication year - 1982
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/gl009i009p01081
Subject(s) - equator , physics , merge (version control) , coronal hole , streamlines, streaklines, and pathlines , geophysics , magnetohydrodynamic drive , corona (planetary geology) , geology , solar wind , magnetohydrodynamics , mechanics , coronal mass ejection , plasma , latitude , astronomy , astrobiology , quantum mechanics , computer science , venus , information retrieval
It is inferred from this study that magnetohydrodynamic slow shocks can exist in the vicinity of the sun. The study uses a two‐hole corona model, the sub‐Alfvenic streams originating from the edge of the polar open‐field regions are forced to turn towards equator in coronal space following the curved boundary of the closed field region. When the streamlines from the opposite poles merge at a neutral point, their directions become parallel to the neutral sheet. An oblique slow shock can develop near or at the neutral point, the shock extends polewards to form a surface of discontinuity around the sun.