Journal
ASTROPHYSICAL JOURNAL
Volume 755, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/755/1/43
Keywords
interplanetary medium; solar wind; Sun: coronal mass ejections (CMEs)
Categories
Funding
- NASA [NNH10AN83I, NAS5-00132, NAS5-00133]
- USAF Space Test Program
- ONR
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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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