Interrelation of Soft and Hard X-Ray Emissions during Solar Flares. II. Simulation Model
Abstract
Two-dimensional electrostatic particle simulations are presented which incorporate the effect of quasi-static electric fields on particle dynamics as well as effects associated with wave-particle interactions induced by the accelerated particles. The properties of the soft and hard X-ray and microwave emissions from such systems are examined. In particular, it is shown that acceleration by quasi-static electric fields and heating via wave-particle interactions produces electron distributions with a broken-power law, similar to those inferred from hard X-ray spectra. Also, heating of the ambient plasma gives rise to a region of hot plasma propagating down to the chromosphere at about the ion sound speed.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 1991
- DOI:
- 10.1086/170197
- Bibcode:
- 1991ApJ...375..382W
- Keywords:
-
- Computerized Simulation;
- Solar Flares;
- Solar X-Rays;
- Stellar Models;
- Collisionless Plasmas;
- Electric Fields;
- High Temperature Plasmas;
- Particle Interactions;
- Wave Interaction;
- Solar Physics;
- PARTICLE ACCELERATION;
- RADIATION MECHANISMS;
- SUN: FLARES;
- SUN: X-RAYS