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The dependence of upstream wave periods on the interplanetary magnetic field strength
Author(s) -
Russell C. T.,
Hoppe M. M.
Publication year - 1981
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/gl008i006p00615
Subject(s) - interplanetary spaceflight , physics , interplanetary magnetic field , geophysics , upstream (networking) , magnetic field , bow shock (aerodynamics) , interplanetary medium , range (aeronautics) , solar wind , field strength , computational physics , shock wave , bow wave , geology , mechanics , computer network , quantum mechanics , computer science , materials science , composite material
It has long been known that the periods of Pc 3, 4 pulsations on the ground correlate with the magnitude of the interplanetary magnetic field. This fact has been used to argue for an exogenic source for these pulsations. Particularly attractive candidates for the source of pulsations in this frequency range are the upstream waves of similar frequencies which are associated with populations of ions reflected from the bow shock. However, the dependence of the period of these waves on the strength of the interplanetary magnetic field has never been checked. This paper performs such a check and confirms that the upstream waves have the proper functional relationship.