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In situ wave phenomena in the upstream and downstream regions of interplanetary shocks: Implications for type 2 burst theoriesThe results are presented of in situ waves observed by the Ulyssess unified radio and plasma wave experiment (URAP) in the upstream and downstream regions of a large number of interplanetary shocks. The Langmuir waves which are the most essential ingredients for the type 2 radio emission are observed only in the upstream regions of a limited number of shocks. On the other hand, the ion-acoustic-like waves (0.5 to 5 kHz) are observed near most of the interplanetary shocks. Implications of observations made for the electron acceleration mechanisms at the collisionless shocks and for type 2 burst theories are presented.
Document ID
19990056485
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Thejappa, G.
(Maryland Univ. College Park, MD United States)
MacDowall, R. J.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Vinas, A. F.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 19, 2013
Publication Date
December 1, 1997
Publication Information
Publication: Proceedings of the 31st ESALB Symposium on Correlated Phenomena at the Sun, in the Heliosphere and in Geospace
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: NCC5-94
CONTRACT_GRANT: NAG5-6059
Distribution Limits
Public
Copyright
Other
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