Relationship of solar gamma ray emissions with microwaves and other radio bursts.
Abstract
The relationships of solar gamma ray (GR) emissions with microwave (MW) and other radio bursts have been studied. The GR emissions are found to start about 1-2 min after the onset of MW emissions (on 17 GHz) or about 0.5 min before the peak of MW emissions. This time delay may be due to differences in acceleration times for accelerating the electrons for MW emissions and protons, ions and nuclei for gamma ray (also line) emissions. Further, the GR emission flares are found to be associated fairly well with type-II and type-IV radio bursts while the gamma ray line (GRL) emission flares show higher association with the type-II and type-IV radio bursts. The type-II bursts start about 6 min after the onset of GR emissions while the type-IV bursts start about 2 min before the onset of GR emissions, which show that the GR emissions and the type-II (also type-IV) may not be produced simultaneously by shock waves.
- Publication:
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Indian Journal of Radio and Space Physics
- Pub Date:
- June 1987
- Bibcode:
- 1987IJRSP..16..281V
- Keywords:
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- Gamma Ray Bursts;
- Microwave Emission;
- Particle Acceleration;
- Solar Radiation;
- Solar Radio Bursts;
- Shock Wave Propagation;
- Solar Flares;
- Solar Physics;
- Gamma Rays:Solar Microwave Bursts;
- Gamma Rays:Solar Radio Bursts;
- Solar Microwave Bursts:Gamma Rays;
- Solar Radio Bursts:Gamma Rays