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Uncovering the birth of a coronal mass ejection from two-viewpoint SECCHI observations

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Vourlidas_2016_Uncovering_SP_AAM.pdf (11.58Mb)
Date
10/2012
Author
Vourlidas, A.
Syntelis, P.
Tsinganos, K.
Keywords
Coronal mass ejections, low coronal signatures
Coronal mass ejections, initiation and propagation
Magnetic reconnection, observational signatures
QB Astronomy
QC Physics
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Abstract
We investigate the initiation and formation of Coronal Mass Ejections (CMEs) via a detailed two-viewpoint analysis of low corona observations of a relatively fast CME acquired by the SECCHI instruments aboard the STEREO mission. The event which occurred on 2 January 2008, was chosen because of several unique characteristics. It shows upward motions for at least four hours before the flare peak. Its speed and acceleration profiles exhibit a number of inflections which seem to have a direct counterpart in the GOES light curves. We detect and measure, in 3D, loops that collapse toward the erupting channel while the CME is increasing in size and accelerates. We suggest that these collapsing loops are our first evidence of magnetic evacuation behind the forming CME flux rope. We report the detection of a hot structure which becomes the core of the white light CME. We observe and measure unidirectional flows along the erupting filament channel which may be associated with the eruption process. Finally, we compare these observations to the predictions from the standard flare-CME model and find a very satisfactory agreement. We conclude that the standard flare-CME concept is a reliable representation of the initial stages of CMEs and that multi-viewpoint, high cadence EUV observations can be extremely useful in understanding the formation of CMEs.
Citation
Vourlidas , A , Syntelis , P & Tsinganos , K 2012 , ' Uncovering the birth of a coronal mass ejection from two-viewpoint SECCHI observations ' , Solar Physics , vol. 280 , no. 2 , pp. 509-523 . https://doi.org/10.1007/s11207-012-9933-8
Publication
Solar Physics
Status
Peer reviewed
DOI
https://doi.org/10.1007/s11207-012-9933-8
ISSN
0038-0938
Type
Journal article
Rights
© 2012, USA Government. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at link.springer.com / https://dx.doi.org/10.1007/s11207-012-9933-8
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  • University of St Andrews Research
URL
http://adsabs.harvard.edu/abs/2012SoPh..280..509V
URI
http://hdl.handle.net/10023/9428

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