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Attrill Gemma D. R., Harra Louise K., Van Driel-Gesztelyi Lidia, Démoulin Pascal, Wülser J.-P.

Coronal ``wave'': A signature of the mechanism making CMEs large-scale in the low corona?

Astronomische Nachrichten, 2007, vol. 328, pp. 760

Référence DOI : 10.1002/asna.200710794
Référence ADS : 2007AN....328..760A

Résumé :

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.

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