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Transient flux enhancements in the magnetosheath
Author(s) -
Němeček Z.,
Šafránková J.,
Přech L.,
Sibeck D. G.,
Kokubun S.,
Mukai T.
Publication year - 1998
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 - 10.1029/98gl50873
Subject(s) - magnetosheath , foreshock , solar wind , transient (computer programming) , physics , bow shock (aerodynamics) , amplitude , flux (metallurgy) , geophysics , classification of discontinuities , shock (circulatory) , computational physics , magnetopause , astrophysics , mechanics , geology , shock wave , optics , plasma , seismology , materials science , aftershock , mathematics , mathematical analysis , quantum mechanics , medicine , computer science , operating system , metallurgy
This study presents INTERBALL‐1, and MAGION‐4 observations of transient ion flux variations in the magnetosheath which cannot be related to similar changes in the solar wind observed by WIND and GEOTAIL. The duration of the transient events varies from tens of seconds to a few minutes and their amplitude can exceed background levels by a factor of 2 or more. We use the closely‐spaced INTERBALL‐1 and MAGION‐4 satellites to estimate that the spatial dimensions of the events are on the order of ∼ 1 R E . The interaction of foreshock discontinuities with the bow shock is identified as a possible source of these events.