Precipitation in trap models for solar hard X-ray bursts.
Abstract
Precipitation of electrons due to collisions necessarily occurs in trap models for hard X-ray bursts, and the thick-target emission from the precipitating electrons produces an X-ray spectrum similar in intensity and spectral shape to that from the trapped electrons. Such a trap-plus-precipitation model combines attractive features and removes some of the difficulties of thick-target and simple trap models. The evolution of the trap-plus-precipitation model is amenable to an analytical description, which is presented, including inversion, to find the injection electron spectrum from the X-ray spectrum. Streaming instabilities are unlikely to be important. Resonant scattering is also probably not important for the electrons which emit most of the X-rays, but may well be important for the higher-energy electrons which generate microwave bursts.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- July 1976
- DOI:
- 10.1093/mnras/176.1.15
- Bibcode:
- 1976MNRAS.176...15M
- Keywords:
-
- Electron Precipitation;
- Magnetically Trapped Particles;
- Solar X-Rays;
- X Ray Spectra;
- Atmospheric Models;
- Energy Spectra;
- Particle Interactions;
- Wave Interaction;
- Solar Physics