A CORONAL HOLE%26apos;S EFFECTS ON CORONAL MASS EJECTION SHOCK MORPHOLOGY IN THE INNER HELIOSPHERE

作者：Wood B E^*; Wu C C; Rouillard A P; Howard R A; Socker D G

来源：Astrophysical Journal, 2012, 755(1): 43.

DOI：10.1088/0004-637X/755/1/43

• interplanetary medium
• solar wind
• Sun: coronal mass ejections (CMEs)

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.

• 出版日期2012-8-10