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Radio Detection of a Rapid Disturbance Launched by a Solar Flare
We report the direct observation of very rapid motion associated with a
solar flare. The motion is seen from a radio source at 0.33 GHz,
which suddenly starts moving during the rise phase of the second peak in
a double--peaked event. The inferred velocity is larger than any previously
inferred velocity of a disturbance in the solar atmosphere apart from freely--streaming
beams of accelerated electrons. The radio emission is moderately circularly
polarized and has an instantaneous bandwidth of at least 100 MHz. Its properties
are not consistent with those of Type II solar radio bursts, but may be
consistent with those of moving Type IV radio bursts.
Authors: P.Janardhan, S.M. White, M.R.Kundu
Organization: University of Maryland
Address: Department of Astronomy,
University of Maryland,
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