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Relation between coronal type II bursts, associated flares and CMEs

Published online by Cambridge University Press:  01 September 2008

George Pothitakis
Affiliation:
Department of Physics, University of Athens, 15784 Athens, Greece
Panagiota Preka-Papadema
Affiliation:
Department of Physics, University of Athens, 15784 Athens, Greece
Xenophon Moussas
Affiliation:
Department of Physics, University of Athens, 15784 Athens, Greece
Constantine Caroubalos
Affiliation:
Department of Informatics, University of Athens, 15783 Athens, Greece
Constantine Alissandrakis
Affiliation:
Department of Physics, University of Ioannina, 45110 Ioannina, Greece
Panagiotis Tsitsipis
Affiliation:
Department of Electronics, Technological Education Institute of Lamia, Lamia, Greece
Athanasios Kontogeorgos
Affiliation:
Department of Electronics, Technological Education Institute of Lamia, Lamia, Greece
Alexander Hillaris
Affiliation:
Department of Physics, University of Athens, 15784 Athens, Greece
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Abstract

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We study a sample of complex events; each includes a coronal type II burst, accompanied by a GOES SXR flare and LASCO CME. The radio bursts were recorded by the ARTEMIS-IV radio spectrograph (100-650 MHz range); the GOES SXR flares and SOHO/LASCO CMEs, were obtained from the Solar Geophysical Data (SGD) and the LASCO lists respectively. The radio burst-flare-CME characteristics were compared and two groups of events with similar behavior were isolated. In the first the type II shock exciter appears to be a flare blast wave propagating in the wake of a CME. In the second the type II burst appears CME initiated though it is not always clear if it is driven by the bow or the flanks of the CME or if it is a reconnection shock.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2009

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