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Solar Physics

, Volume 241, Issue 1, pp 99–112 | Cite as

Acceleration Phase of Coronal Mass Ejections: II. Synchronization of the Energy Release in the Associated Flare

  • Darije Maričić
  • Bojan VršnakEmail author
  • Andrew L. Stanger
  • Astrid M. Veronig
  • Manuela Temmer
  • Dragan Roša
Article

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 

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Copyright information

© Springer 2007

Authors and Affiliations

  • Darije Maričić
    • 1
  • Bojan Vršnak
    • 2
    Email author
  • Andrew L. Stanger
    • 3
  • Astrid M. Veronig
    • 4
  • Manuela Temmer
    • 2
  • Dragan Roša
    • 1
  1. 1.Astronomical Observatory ZagrebZagrebCroatia
  2. 2.Hvar ObservatoryFaculty of GeodesyZagrebCroatia
  3. 3.High Altitude ObservatoryBoulderUSA
  4. 4.IGAM/Institute of PhysicsUniversity of GrazGrazAustria

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