Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME
Informazioni aggiuntive
Autori
Pohjolainen S.,
McKay D.,
Talebpour Sheshvan N.,
Monstein C.
Tipo
Articolo pubblicato in rivista scientifica
Anno
2023
Lingua
Inglese
Abstract
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, which 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 source region. 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.
Rivista
Solar Physics
Volume
298
Numero
10
Mese
ottobre
Pagina inizio
118
Parole chiave
Flares, Dynamics, Magnetic fields, Corona, Radio bursts, Association with flares, Coronal mass ejections, Initiation and propagation
