Coronal Mass Ejections Observed at the Total Solar Eclipse on 13 November 2012

摘要

We carried out white-light observations of the total solar eclipse on 13November 2012 at two sites, where the totality occurred 35 minutes apart. Wecaught an ongoing coronal mass ejection (CME) and a pre-CME loop structure justbefore the eruption in the height range between 1-2 R_sun. The source region ofCMEs was revealed to be in this height range, where the material and themagnetic field of CMEs were located before the eruption. This height rangeincludes the gap between the extreme ultraviolet observations of the low coronaand the spaceborne white-light observations of the high corona, but the eclipseobservation shows that this height range is essentially important to study theCME initiation. The eclipse observation is basically just a snapshot of CMEs,but it indicates that future continuous observations of CMEs within this heightrange are promising.