A Group of Solar Microwave Type iii Bursts with Reversed Drift Rates on nov. 4, 1997
Source: Astrophysics and Space Science, Volume 266, Number 3, 1999 , pp. 389-398(10)
Abstract:The most important feature of the microwave type III bursts on Nov. 4, 1997 is the periodically reversed drift rates, which may be contributed to a group of electron beams trapped by a huge magnetic tube (10^4 km). It is suggested that these electron beams are accelerated by the same mechanism, because there is a power law distribution with index 3.2 in the energetic spectrum of the beam. On the other hand, the energy release in each pulse is quasi-quantized, which is confirmed by the statistical correlation between the rising time and the burst flux. Both of these two results are based on the model of plasma instability responsible for the burst.
Document Type: Regular Paper
Affiliations: 1: Purple Mountain Observatory, Nanjing, P.R. China National Astronomical Observatories, Chinese Academy of Sciences 2: Beijing Astronomical Observatory, Beijing, P.R. China National Astronomical Observatories, Chinese Academy of Sciences 3: Department of Astronomy, Nanjing University, P.R. China
Publication date: 1999