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Coronal Magnetic Field Topology over CME Productive Quiescent Filaments

Published online by Cambridge University Press:  01 November 2006

Yan Li  and
Janet Luhmann
Yan Li
Affiliation:
Space Sciences Laboratory, University of California, 7 Gauss Way, Berkeley, CA 94720, USA
Janet Luhmann
Affiliation:
Space Sciences Laboratory, University of California, 7 Gauss Way, Berkeley, CA 94720, USA
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Abstract

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Magnetic field topology at the CME source regions is considered to play a role in CME initiation processes. We use observational data and Potential Field Source Surface model to investigate the magnetic field topology over CME productive quiescent filaments. We found both bipolar topology and quadrupolar topology at CME source regions, but bipolar topology is more common overall and in each year. The total occurrence ratio between bipolar and quadrupolar topology is about 3:1 with our 80 events. On the rising phase of the solar cycle, there is mostly bipolar topology, but on the declining phase, there is a mixture of both bipolar and quadrupolar topology.

Keywords

Sun: magnetic fieldsSun: coronal mass ejections (CMEs)Sun: coronaSun: filaments
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S233: Solar Activity and its Magnetic Origin , March 2006 , pp. 403 - 404
Copyright
© 2006 International Astronomical Union