Flare observations
Abstract
The solar flare represents a sudden release of energy in the atmospheric layers of the sun. In tens of seconds or a few minutes the temperature rises throughout the solar atmosphere, reaching its peak, often well above 10 million K, in the solar corona. Flare observations in the H-alpha light are considered along with chromospheric flare spectra, thermal flares in soft X-rays, impulsive hard X-ray and microwave bursts, energy transfer through the transition layer, metric radio bursts, flare ejecta, and the production and effects of high-energy particles in flares. Attention is given to the general characteristics of flares, flare emissions, flare classification, two-ribbon and compact flares, flare theory, flares in relation to magnetic fields, flare occurrence, flares in relation to velocity fields, flare-associated changes in the magnetic field, the EUV spectrum, the EUV flare morphology and density, and flare waves.
- Publication:
-
Solar Flare Magnetohydrodynamics
- Pub Date:
- 1981
- Bibcode:
- 1981sfmh.book...47S
- Keywords:
-
- Solar Atmosphere;
- Solar Flares;
- Solar Radio Bursts;
- Solar X-Rays;
- Chromosphere;
- Coronal Loops;
- Extreme Ultraviolet Radiation;
- H Alpha Line;
- Particle Acceleration;
- Solar Magnetic Field;
- Thermal Emission;
- Transition Layers;
- X Ray Spectra;
- Solar Physics