Physics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990soph..125..343s&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 125, Feb. 1990, p. 343-357.
Physics
13
Microwave Emission, Radio Spectra, Solar Radio Bursts, Solar Flares, Spectral Resolution, Synchrotron Radiation
Scientific paper
The multicomponent characteristics of bursts are discussed, with emphasis on the relationship between their primary and secondary components. It is shown that microwave bursts with complex spectra, consisting of two or more spectral components, can be divided into two classes. One class may result from bursts in which the microwave radiation is generated in two different gyrosynchrotron sources that evolve differently in time. The second class is characterized by a common temporal evolution of the spectral components, the similarity of the circular polarization of both components, and the commonality in the ratio of primary to secondary peak frequencies from event to event. These properties suggest that the two components originate in a common source or from individual sources that are strongly coupled. An additionally observed event of this class also suggests that the primary and secondary components have a similar location, but that the surface area of the secondary component is larger.
Gary Dale E.
Hurford Gordon J.
Stähli M.
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