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High time resolution observations of the solar wind and backstreaming ions in the Earth’s foreshock region
Author(s) -
Formisano V.,
Orsini S.,
Bonifazi C.,
Egidi A.,
Moreno G.
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/gl007i005p00385
Subject(s) - solar wind , physics , ion , foreshock , bow shock (aerodynamics) , population , shock (circulatory) , earth (classical element) , geophysics , magnitude (astronomy) , astrophysics , astronomy , geology , shock wave , plasma , seismology , mechanics , medicine , demography , quantum mechanics , sociology , aftershock
The interaction of the solar wind with ions backstreaming from the earth’s bow shock is studied at high time resolution. It turns out that the bulk velocity of the solar wind oscillates, both in magnitude and direction, with typical periods of ∼1 minute in presence of the ‘diffuse’ ion population. Oscillations of comparable periods are also observed in the angular distribution and energy spectrum of the diffuse ions.