Group of type I bursts and its associated spikes

Details Group of type I bursts and its associated spikes Group of type I bursts and its associated spikes

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...373.1083w&link_type=abstract

Astronomy and Astrophysics, v.373, p.1083-1088 (2001)

Astronomy and Astrophysics

Astrophysics

6

Sun: Radio Radiation, Sun: Corona

Scientific paper

A group of type I bursts in solar radio bursts, observed with the 2.6-3.8 GHz spectrometer of the Beijing Astronomical Observatory on April 15 1998, is selected and analyzed. The type I bursts are associated with a large number of spikes, which have been recorded by the spectrometer at high temporal resolution (8 ms). We report the observational characteristics of the type I bursts and the corresponding spikes including duration, frequency bandwidth, drift rate and quasi-periodicity. Afterwards we discuss the space scale, the brightness temperature and the magnetic field strength at the emission source region. Finally we investigate the mechanism which would cause the quasi-periodicity of the type I bursts and the short time scale of the spikes theoretically. It is suggested that the type I bursts and the spikes differ clearly between their source regions in the space scale, the brightness temperature, the magnetic field strength and the magnetic structure.

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