Title:
Prominence instability and CMEs triggered by massive coronal rain
in the solar atmosphere

Name:
Zurab Vashalomidze

Abstract:
AIMS: We aim to study the observational evidence of the
influence of coronal rain on the stability of prominence and subsequent
eruption of CMEs.
METHODS: We used the simultaneous observations
from the SDO/AIA and STEREO/SECCHI spacecraft from different angles to
follow the dynamics of prominence and to study the role of coronal rain
in their destabilisation.
RESULTS: Three different prominences observed
during the years 2011–2012 were analysed using observations acquired
by SDO and STEREO. In all three cases, massive coronal rain from the
prominence body led to the destabilisation of prominence and
subsequently to the eruption of CMEs. The coronal rain triggered the
initial slow rise of prominences, which led to the final instability
after 18–28 h in all cases. The estimated mass flux carried by coronal
rain blobs showed that the prominences became unstable after 40% of mass
loss.