Physics
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..111..397m&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 111, no. 2, 1987, p. 397-418.
Physics
15
Kilometric Waves, Radio Bursts, Shock Waves, Solar Corona, Type 2 Bursts, Type 3 Bursts, Electron Acceleration, Microwave Emission
Scientific paper
The existence of a class of fast-drift, shock-associated (SA), kilometric radio bursts which occur at the time of metric type II emission and which are not entirely the kilometric continuation of metric type III bursts has been reported previously (Cane et al., 1981). In this paper, the authors establish unambiguous SA event criteria for the purpose of statistically comparing SA events with conventional kilometric type III bursts. They apply these criteria to all long-duration, fast-drift bursts observed by the ISEE-3 spacecraft during a 28-month interval and find that more than 70% of the events satisfying the criteria are associated with the radio signatures of coronal shocks. If a given event in this sample is associated with a metric type II or type IV burst, it is 13 times more likely to satisfy the SA criteria than an event associated only with metric type III activity. Compared with conventional kilometric type III bursts, the characteristics of these SA events are longer duration, higher maximum intensity, and a larger number of components.
Kundu Mukul R.
Macdowall Robert J.
Stone Robert G.
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