2. On April 1, 1981 the great microwave burst consists of three major bursts. The times of flux peaks are 0135.1 UT, 0146:1 UT and 0153.6 UT, respectively.
In this paper, the spikes and fast fine structures (FFS) superimposed on the microwave burst with the type 47GB on May 16, 1991 were introduced briefly.
Filtergrams of 1B/M1-M4 Ha flare starting at 22h25m of November 11, 1980 are digitized, and isophote lines are drawn in order to compare with hard X-ray, soft X-ray and microwave burst images.
One of the quasi-periodically appearing patches is associated with the microwave burst emission, the same (or a later, lower frequency one) immediately preceeds the meter wave type II burst lanes.
The fact that the noise-storm decreases develop with delays of several tens of minutes relative to the associated microwave burst peak, when the corresponding CME front is located at heights of several R⊙, however, is not explained.
The history of solar microwave busrt classification at home and abroad and the physical meanings of the classification are generalized, and the classification notes of 49 types used at present in S. G. D are listed in detail in this article. The microwave burst classification of Purple Mountains Observatory made in 1980 is systematically compared with that of Beijing Observatory, the reason of the discrepancy between them is found out and a proposal for the future classification work is of...
A flare of Importance 3B occurred at 0542-0613-0734 UT on 1980 Oct. 14 in a sunspot region (M. W. No 21811, AR2725) at S10/Wl5. During the flare, the spray, it's disturbance along an arc trajectory and the associated radio burst at the 3.2-cm and 10.6-cm wavelengths were observed at Beijing Observatory. The observations of Yunnan Observatory at the 8.2-cm wavelength, Tokyo Observatory at the 2-cm wavelength and Toyokawa at the 15-cm and 30-cm wavelengths, and the spectral data in SGD are used to analy...
A .3B flare which occurred in a spotless region on Oct. 15, 1980 is rrio-phologically analysed in some detail. The main results of the analysis are as follows: 1) The flare had no flash phase and the maximum intensity of the flare was about 2.4 times as much as that of the undisturbed region. 2) The flare had the double-ribbon structure with the separation velocity of about 5 km/sec. 3) The filament in connection with the flare was located at the boundary of a large scale magnetic field with opposite polari...