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arXiv · 1206.3584

A Coronal Hole's Effects on CME Shock Morphology in the Inner Heliosphere

B. E. Wood·C. - C. Wu·A. P. Rouillard·R. A. Howard·D. G. Socker
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Abstract

We use STEREO imagery to study the morphology of a shock driven by a fast coronal mass ejection (CME) launched from the Sun on 2011 March 7. The source region of the CME is located just to the east of a coronal hole. The CME ejecta is deflected away from the hole, in contrast with the shock, which readily expands into the fast outflow from the coronal hole. The result is a CME with ejecta not well centered within the shock surrounding it. The shock shape inferred from the imaging is compared with in situ data at 1 AU, where the shock is observed near Earth by the Wind spacecraft, and at STEREO-A. Shock normals computed from the in situ data are consistent with the shock morphology inferred from imaging.

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B. E. Wood, C. - C. Wu, A. P. Rouillard, R. A. Howard, D. G. Socker. 2012-06-15. A Coronal Hole's Effects on CME Shock Morphology in the Inner Heliosphere. https://doi.org/10.1088/0004-637x/755/1/43

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