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Terrestrial continuum radiation observations with GEOS‐1 and ISEE‐1
Author(s) -
Etcheto J.,
Christiansen P. J.,
Gough M. P.,
Trotig J. G.
Publication year - 1982
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/gl009i011p01239
Subject(s) - plasmasphere , physics , radiation , magnetosphere , context (archaeology) , electromagnetic radiation , computational physics , geophysics , plasma , geology , optics , paleontology , quantum mechanics
Examples of results from a dual satellite (GEOS‐1 and ISEE‐1) study of terrestrial non‐thermal electromagnetic continuum radiation are presented. The problems of sources and generation mechanisms are discussed in the context of simultaneous measurements of radiation arrival directions, radiation cut‐offs, and detailed spectral observations. The results, which imply significant contributions from the magnetospheric volume to the low frequency (‘trapped’) component, confirm the near‐plasmapause as the source of the higher frequency (‘escaping’) component. The detection of significant X mode radiation and the implied presence of localized non‐directive sources lead us to conclude that current theories of generation are inadequate.