Low-level decimetric (1.6 GHz) solar burst activity

Details Low-level decimetric (1.6 GHz) solar burst activity Low-level decimetric (1.6 GHz) solar burst activity

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..111..189s&link_type=abstract

(Observatoire de Paris, CNRS, CNES, et al., CESRA Workshop on Particle Acceleration and Trapping in Solar Flares, 2nd, Aubigny-s

Physics

17

Cyclotron Radiation, Solar Activity, Solar Radio Bursts, Circular Polarization, Masers, Plasma Interactions, Power Spectra, Temporal Distribution

Scientific paper

Observations of solar bursts at 1.6 GHz were carried out in the month of July 1985 for about two weeks. Five intervals of solar burst activity, each one lasting for a couple of minutes, were observed. Predominantly, two classes of fast bursts were observed: viz: "spike" and "blips". However, some of these bursts were two orders of magnitude less intense than those reported earlier. This investigation suggests that blips probably originate at second harmonic by beam plasma interaction as that of metric type III bursts. Also, low-level ms-spikes with the half power duration in the range of 5 to 20 ms suggest that source sizes be smaller than 50 km if the process of emission is electron-cyclotron maser.

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