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Deflection of coronal rays by remote CMEs: shock wave or magnetic pressure? View all abstracts by submitter

Boris Filippov   Submitted: 2010-07-01 00:16

We analyze five events of the interaction of coronal mass ejections (CMEs) with the remote coronal rays located up to 90 degrees away from the CME as observed by the SOHO/LASCO C2 coronagraph. Using sequences of SOHO/LASCO C2 images, we estimate the kink propagation in the coronal rays during their interaction with the corresponding CMEs ranging from 180 to 920 km s-1 within the interval of radial distances form 3 R to 6 R. We conclude that all studied events do not correspond to the expected pattern of shock wave propagation in the corona. Coronal ray deflection can be interpreted as the influence of the magnetic field of a moving flux rope related to a CME. The motion of a large-scale flux rope away from the Sun creates changes in the structure of surrounding field lines, which are similar to the kink propagation along coronal rays. The retardation of the potential should be taken into account since the flux rope moves at high speed comparable with the Alfvén speed.

Authors: Boris Filippov and A.K. Srivastava
Projects: None

Publication Status: Solar Physics (in press)
Last Modified: 2010-07-02 14:55
Go to main E-Print page  Solar Magnetic Feature Detection and Tracking for Space Weather Monitoring  Sideways displacement of penumbral fibrils by the solar flare on 2006 December 13  Edit Entry  Download Preprint  Delete Entry 

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