U-shaped multiband type II radio burst from a behind-limb solar flare

Details U-shaped multiband type II radio burst from a behind-limb solar flare U-shaped multiband type II radio burst from a behind-limb solar flare

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993azh....70..188k&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 70, no. 1, p. 188-200.

Astronomy and Astrophysics

Astronomy

1

Shock Wave Propagation, Solar Flares, Solar Radio Bursts, Solar Spectra, Type 2 Bursts, Plasma Waves, Solar Corona, Stellar Mass Ejection

Scientific paper

Spectral characteristics of an unusual type II radio burst from a flare site far behind (130 deg W) the solar limb are analyzed. The type II burst consists of three or four simultaneous analogous U-shaped bands with a slow variation of the frequency drift sign. It is proposed that the form of the dynamic spectrum corresponds to the generation of type II burst emission from the interaction of a blast shock wave with a dense large-scale arch structure of a loop-shaped coronal transient. Analysis of different variants of an interpretation of the spectral band structure points to the possibility of the generation of type II burst emission at higher harmonics (n is geater than 2) of the local plasma frequency.

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