| タイトル | Particle propagation effects on wave growth in a solar flux tube |
| 著者（英） | White, S. M.; Melrose, D. B.; Dulk, G. A. |
| 著者所属（英） | Sydney Univ.|Colorado Univ. |
| 発行日 | 1986-09-01 |
| 言語 | eng |
| 内容記述 | The evolution of a distribution of electrons is followed after they are injected impulsively at the top of a coronal magnetic loop, with the objective of studying the plasma instabilities which result. At early times the downgoing electrons have beamlike distributions and amplify electrostatic waves via the Cerenkov resonance; the anomalous Doppler resonance is found to be less important. Slightly later, while the electrons are still predominantly downgoing, they are unstable to cyclotron maser generation of z-mode waves with omega(p) much less than Omega, or to second harmonic x-mode waves. The energetics of these instabilities, including saturation effects and heating of the ambient plasma, are discussed. It is suggested that coalescence of two z-mode waves generated by cyclotron maser emission of the downgoing electrons may produce the observed microwave spike bursts. |
| NASA分類 | SOLAR PHYSICS |
| レポートNO | 87A16640 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/381094 |
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