Acceleration Phase of Coronal Mass Ejections: II. Synchronization of the Energy Release in the Associated Flare |
| |
Authors: | Darije Mari?i? Bojan Vr?nak Andrew L Stanger Astrid M Veronig Manuela Temmer Dragan Ro?a |
| |
Institution: | (1) Astronomical Observatory Zagreb, Opatička 22, 10000 Zagreb, Croatia;(2) Hvar Observatory, Faculty of Geodesy, Zagreb, Croatia;(3) High Altitude Observatory, Boulder, CO, USA;(4) IGAM/Institute of Physics, University of Graz, Graz, Austria |
| |
Abstract: | We analyze the relationship between the acceleration of coronal mass ejections (CMEs) and the energy release in associated
flares, employing a sample of 22 events in which the CME kinematics were measured from the pre-eruption stage up to the post-acceleration
phase. The data show a distinct correlation between the duration of the acceleration phase and the duration of the associated
soft X-ray (SXR) burst rise, whereas the CME peak acceleration and velocity are related to the SXR peak flux. In the majority
of events the acceleration started earlier than the SXR burst, and it is usually prolonged after the SXR burst maximum. In
about one half of the events the acceleration phase is very closely synchronized with the fastest growth of the SXR burst.
An additional one quarter of the events may be still considered as relatively well-synchronized, whereas in the remaining
quarter of the events there is a considerable mismatch. The results are interpreted in terms of the feedback relationship
between the CME dynamics and the reconnection process in the wake of the CME. |
| |
Keywords: | Coronal mass ejections Solar flares Reconnection |
本文献已被 SpringerLink 等数据库收录! |
|