COLLISIONLESS SHOCK WAVES IN SPACE
Various types of collisionless shock waves occurring in the heliosphere are interplanetary travelling shocks, shock pairs bounding co-rotating interaction regions, planetary bow shocks, and the heliospheric terminating shock. The earth's bow shock is the most detailed studied collisionless shock. Recent spacecraft observations at the bow shock pertaining to the structure of collisionless shocks are reviewed. In particular the dual ISEE 1 and 2 spacecraft mission allowed for the first time an exact determination of the different length scales in the shock transition region. Also determination of wave rest frame frequencies and polarizations (and thus of the wave modes) was only possible by using data from two closely spaced satellites. The viscosity at the quasi-perpendicular shock is provided by the reflected and gyrating ions. The thermalisation of the electrons is probably due to instabilities driven by the free energy in a field aligned electron beam. This electron beam is due to the macroscopic electric field along the macroscopic magnetic field and is directed into the downstream medium.
Bibliographic Reference: 1984 INTERNATIONAL CONFERENCE ON PLASMA PHYSICS, LAUSANNE (SWITZERLAND), JUNE 27-JULY 3, 1984 VOL. II, PP. 1019-1038 EUR 9708 EN (1985) FS, VOL. I AND VOL. II, 1155 P., BFR 3500 (BOTH VOLUMES), EUROFFICE, LUXEMBOURG, POB 1003
Record Number: 1989124052400 / Last updated on: 1987-01-01
Available languages: en