Sudden decrease of microwave solar radio emission
Abstract
Total flux observations on the microwave solar radio emission sometimes show depressions after bursts or without bursts. These, classified as 'post burst decrease' or 'absorption', are gradual phenomena and the duration is usually more than an hour. In contrast to these phenomena, the authors found two sudden decreases of the total flux just before the bursts of July 21, 1978 and September 7-8, 1978. The durations were shorter than 10 minutes. The observational results are given which were obtained by four microwave polarimeters and two interferometers at Toyokawa. A preliminary interpretation is also given for the event of September 7-8, 1978 using the data of optical, soft X-ray and meter-wave observations.
- Publication:
-
Proceedings of the Research Institute of Atmospherics, Nagoya University
- Pub Date:
- March 1979
- Bibcode:
- 1979PRIAN..26...53S
- Keywords:
-
- Microwave Emission;
- Radiant Flux Density;
- Solar Activity Effects;
- Solar Radio Emission;
- Microwave Interferometers;
- Polarimeters;
- Solar X-Rays;
- Very High Frequencies