An interpretation on the millisecond- and second-scale time structures in the radio spike radiation

Details An interpretation on the millisecond- and second-scale time structures in the radio spike radiation An interpretation on the millisecond- and second-scale time structures in the radio spike radiation

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993acasn..34...32s&link_type=abstract

Acta Astronomica Sinica (ISSN 0001-5245), vol. 34, no. 1, p. 32-37.

Astronomy and Astrophysics

Astronomy

1

Magnetohydrodynamic Waves, Solar Radio Emission, Electron Beams, Electron Cyclotron Heating, Magnetic Mirrors, Plasma Oscillations

Scientific paper

In the present paper, the time structures in solar radio spike radiation have been studied. We suggest that during the oscillations of the nonlinear MHD 'sausage' wave modes, the energetic electron beams are reflected to and fro between each two adjacent magnetic mirror points, thereby forming the loss-cone distributions in which the upward moving electron beams drive the growth of the wave modes of electron cyclotron maser instabilities, and generate the millisec-scale spike radiation. In the meanwhile, the sausage wave modes modulate the millisec-spike radiation with a period of the scale of a second. This modulation period is consistent with the evolution period of the electron beams in the loss-cone distributions.

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