Homologous microwave flare on May 29, 1980
Observations are presented of two homologous solar bursts recorded on May 29, 1980 at 1028 UT and at 1147 UT from the Hale region 16864. The measurements were obtained at 8 mm wavelength (frequency 37 GHz) at the Metsahovi Radio Research Station, Finland, using a 14 meter radio telescope. Results show that the time series of the bursts were similar even in the small details, in which the rise time of both bursts was about 10 seconds and the peak flux density was 3.3 sfu at 1028 UT and 1.2 sfu at 1147 UT. It was found that both bursts were composed of several elementary spikes which were typically 3 seconds apart from each other. Both bursts were composed of several elementary spikes which were typically 3 seconds apart from each other, and the maximum of the gyro-synchrotron type spectrum was determined to be close to 15 GHz. The time profile of the burst, the elementary spikes, and the frequency spectrum shows that the origin of these homologous microwave bursts was in a magnetic structure with several loops and that the same complex loop structure was producing energy during both bursts.
- Research Organization:
- Helsinki Univ. of Tech., Espoo, Finland
- OSTI ID:
- 6448815
- Report Number(s):
- CONF-820582-
- Journal Information:
- Adv. Space Res.; (United States), Vol. 2; Conference: 24. COSPAR meeting (Committee on Space Research), Ottawa, Canada, 17 May 1982
- Country of Publication:
- United States
- Language:
- English
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