Fiber bursts in type IV DM Radio continua as a signature of coronal current sheet dynamics

Details Fiber bursts in type IV DM Radio continua as a signature of coronal current sheet dynamics Fiber bursts in type IV DM Radio continua as a signature of coronal current sheet dynamics

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..141..371a&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 141, no. 2, p. 371-379.

Physics

12

Current Sheets, Fine Structure, Radio Bursts, Radio Emission, Solar Corona, Type 4 Bursts, Magnetohydrodynamic Waves, Solar Flares, Solar Prominences, Solar Spectra

Scientific paper

In the late phase of some complex flare events which produce type IV radio emission, a narrow-band decimetric component with generally a high abundance of spectral fine structures is observed. We identify this late dm continuum as a hypothetical 'switch-off' signature of the equivalent two-ribbon flare current system. The quasi-periodic and highly dynamic fiber-burst pattern studied in the February 5, 1986 example is understood as radio evidence for a final reactivation of a cyclic sequence of instabilities in the driven reconnecting current sheet below the rising prominence.

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