Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME |
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Silja Pohjolainen Submitted: 2023-09-20 13:49
We have analysed a solar event from 27 September 2021, which
included a small GOES B-class flare, a compact and narrow-width CME, and
radio type III bursts that appeared in groups. The long-duration, repeated
metric type III burst emission indicates continuous electron acceleration
at high altitudes. The flaring active region was surrounded by strong
magnetic fields and large-scale loops, that guided the outflow of the
CME plasmoid and hence the narrow, bullet-like appearance of the CME.
Radio imaging and EUV observations confirmed the direction of particle
propagation and the depletion of matter from the solar disc. We
observed V-shaped type III burst emission lanes, which also explain the
field configuration and suggest a possible location for repeated
reconnection that occurred at a constant altitude.
Authors: Silja Pohjolainen, Derek McKay, Nasrin Talebpour Sheshvan, Christian Monstein
Projects: None
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Publication Status: Solar Physics, September 2023, accepted.
Last Modified: 2023-09-25 15:13
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