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Restricted propagation of an “EIT wave” in the low solar corona

Published online by Cambridge University Press:  09 September 2016

David M. Long ,
David Pérez–Suárez  and
Gherardo Valori
David M. Long
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey, RH5 6NT, U.K. email: david.long@ucl.ac.uk
David Pérez–Suárez
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey, RH5 6NT, U.K. email: david.long@ucl.ac.uk
Gherardo Valori
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey, RH5 6NT, U.K. email: david.long@ucl.ac.uk
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Abstract

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We present observations of an “EIT wave” associated with an X-class flare from 2012 July 6, the propagation of which was severely restricted by the magnetic structure of the solar corona surrounding the erupting active region. The “EIT wave” was observed by both SDO and STEREO-A, allowing a three-dimensional examination of how the propagation of the disturbance was affected both by a neighbouring coronal hole and a trans-equatorial loop system. In addition, the eruption was observed at the limb by the ground-based CoMP instrument, allowing the Doppler motion associated with the eruption and resulting coronal loop oscillation to be investigated in detail. This combination of data-sets provides a unique insight into the three-dimensional evolution of the “EIT wave” and its effects on the surrounding corona.

Keywords

Sun: coronaSun: coronal mass ejections (CMEs)Sun: flaresshock waves
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S320: Solar and Stellar Flares and their Effects on Planets , August 2015 , pp. 98 - 102
Copyright
Copyright © International Astronomical Union 2016 

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