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Coronal “wave”: A signature of the mechanism making CMEs largescale in the low corona?
Author(s) -
Attrill G.D.R.,
Harra L.K.,
van DrielGesztelyi L.,
Démoulin P.,
Wülser J.P.
Publication year - 2007
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200710794
Subject(s) - physics , corona (planetary geology) , astrophysics , coronal plane , coronal hole , coronal mass ejection , core (optical fiber) , mechanism (biology) , astronomy , magnetic reconnection , plasma , solar wind , optics , astrobiology , nuclear physics , medicine , quantum mechanics , venus , radiology
We analyse one of the first coronal waves observed by STEREO/EUVI associated with a source region just behind the limb, NOAA 10940. We apply the coronal “wave” model proposed by Attrill et al. (2007) to explain the evolution of the observed bright fronts, thereby arguing that the bright fronts and dimmings are due to magnetic reconnections between the expanding CME core and surrounding magnetic structures. We offer a discussion showing that this model provides a mechanism via which CMEs, expanding from a small source region can naturally become large‐scale in the low corona. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)