Fiber bursts in type IV dm radio continua as a signature of coronal current sheet dynamics |
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| Authors: | H Aurass B Kliem |
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| Institution: | (1) Institut für Astrophysik, Observatorium für solare Radioastronomie, 0-1501 Tremsdorf, Germany;(2) Institut für Astrophysik, O-1591 Potsdam, Germany |
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| Abstract: | 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.Paper presented at the 4th CESRA Workshop in Ouranopolis (Greece) 1991. |
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