A COHERENT NONLINEAR-THEORY OF AURORAL LANGMUIR-ALFVEN-WHISTLER (LAW)EVENTS IN THE PLANETARY MAGNETOSPHERE

Authors
LOPES SR CHIAN ACL
Citation
Sr. Lopes et Acl. Chian, A COHERENT NONLINEAR-THEORY OF AURORAL LANGMUIR-ALFVEN-WHISTLER (LAW)EVENTS IN THE PLANETARY MAGNETOSPHERE, Astronomy and astrophysics, 305(2), 1996, pp. 669-676
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
305
Issue
2
Year of publication
1996
Pages
669 - 676
Database
ISI
SICI code
0004-6361(1996)305:2<669:ACNOAL>2.0.ZU;2-X
Abstract
A coherent nonlinear theory of three-wave coupling involving Langmuir, Alfven and whistler waves is formulated and applied to the observatio n of auroral LAW events in the planetary magnetosphere. The effects of pump depletion, dissipation and frequency mismatch in the nonlinear w ave dynamics are analyzed. The relevance of this theory for understand ing the fine structures of auroral whistler-mode emissions and amplitu de modulations of auroral Langmuir waves is discussed.