Hard X-ray dynamic spectrum of flares observed by Hinotori
Abstract
Time variations of the hard X-ray spectrum in solar flares are observed by the hard X-ray spectrometer (HXM) aboard the Hinotori satellite. With a new presentation of the dynamic spectrum we have studied the differences between impulsive and gradual hard X-ray bursts. In the impulsive events a "bent" spectrum up to some hundred keV persists at least until the main peak. In the gradual events, on the other hand, a power-law spectrum augmented by a low-energy excess is dominant.
- Publication:
-
Solar Physics
- Pub Date:
- July 1983
- DOI:
- 10.1007/BF00157196
- Bibcode:
- 1983SoPh...86..241N
- Keywords:
-
- Solar Flares;
- Solar X-Rays;
- Spaceborne Astronomy;
- X Ray Spectra;
- Bursts;
- Gamma Ray Spectrometers;
- Temporal Distribution;
- Solar Physics;
- Flare;
- Time Variation;
- Main Peak;
- Solar Flare;
- Dynamic Spectrum