On the linear theory of oblique magnetospheric chorus excitation
| Autor: | O. N. Savina, P. A. Bespalov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Atmospheric Science 010504 meteorology & atmospheric sciences biology Frequency band Chorus Oblique case biology.organism_classification 01 natural sciences Computational physics Geophysics Space and Planetary Science Physics::Space Physics 0103 physical sciences Group velocity Wave vector 010303 astronomy & astrophysics Excitation Beam (structure) 0105 earth and related environmental sciences Electromagnetic pulse |
| Zdroj: | Journal of Atmospheric and Solar-Terrestrial Physics. 185:58-67 |
| ISSN: | 1364-6826 |
| Popis: | Some aspects of the theory of generation of magnetospheric chorus are discussed. An original approach to solving the problem of oblique chorus generation near the Gendrin angle is outlined and partially realized within the framework of a beam pulsed amplifier mechanism. Parameters of the resonance electron beam in the chorus excitation region are determined theoretically. A short electromagnetic pulse amplification is calculated by means of a linear approach. Some important properties of the oblique chorus emissions, such as the location of the excitation region, frequency band, wave vector direction, group velocity direction, temporary dynamics, and energy of particles and waves are explained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect