| Full text | |
| Author(s): |
Simoes, F. J. R., Jr.
;
Alves, M. V.
;
Cardoso, F. R.
;
Costa, E., Jr.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS; v. 73, n. 11-12, p. 9-pg., 2011-07-01. |
| Abstract | |
This work investigates the influence of a nongyrotropic electron beam on the coupling between the electromagnetic modes of parallel propagation in a background gyrotropic plasma. We explore the importance of the relevant parameters in driving instabilities: the ratio of electron plasma frequency to electron cyclotron frequency, the gyrophase angle, and the temperature anisotropy. We confirm previous results that nongyrotropy can lead to mode coupling for specific values of relevant parameters. More important was to observe that when the anisotropy in the system provides sufficient free energy to start instabilities, the electron nongyrotropy plays an important role to change the growth rate. (C) 2010 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 08/01288-0 - Numerical simulations on electromagnetic emissions driven by multiple electon beams associated to potential geoeffective solar phenomena |
| Grantee: | Fernando Jaques Ruiz Simões Junior |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |