HR: 0800h
AN: SH31A-0226    [Abstracts]
TI: On-disk Observation of a Sympathetic CME in SOHO-EIT
AU: * Sechler, M
EM: sechler@boulder.swri.edu
AF: University of Colorado, Department of Astrophysical and Planetary Sciences Campus Box 391, Boulder, CO 80309,
AU: * Sechler, M
EM: sechler@boulder.swri.edu
AF: Southwest Research Institute, Department of Space Studies 1050 Walnut St., Suite 300, Boulder, CO 80302,
AU: Wills-Davey, M J
EM: meredith@boulder.swri.edu
AF: Southwest Research Institute, Department of Space Studies 1050 Walnut St., Suite 300, Boulder, CO 80302,
AB: We present the first observation of a sympathetic coronal mass ejection (CME) for which there is an obvious initiation mechanism. We observe a CME instigated from AR 10484 and an EIT wave traveling into AR 10486, where another CME is initiated. We note that, while the second CME appears driven by the first, the actual driver reaches it before the EIT wave. We hypothesize that the driver of the sympathetic CME is not the EIT wave itself, but is rather a decoupled Moreton wave. In such a case, a Moreton wave and an EIT wave are instigated at the same source, but then travel separately along similar trajectories, due to their differing speeds. This observation also yields much faster velocities for EIT waves than have been previously observed, as well as a possible instance of a channeled dimming region.
DE: 7509 Corona
DE: 7513 Coronal mass ejections (2101)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Fall Meeting