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ULYSSES OBSERVATIONS OF THE MAGNETIC CONNECTIVITY BETWEEN CORONAL, MASS EJECTIONS AND THE SUNWe have investigated the magnetic connectivity of coronal mass ejections (CMEs) to the Sun using Ulysses observations of suprathermal electrons at various distances between 1 and 5.2 AU. Drawing on ideas concerning the eruption and evolution of CMEs, we had anticipated that there might be a tendency for CMEs to contain progressively more open field lines, as reconnection back at the Sun either opened or completely disconnected previously closed field lines threading the CMEs. Our results, however, did not yield any discernible trend. By combining the potential contribution of CMEs to the heliospheric flux with the observed buildup of flux during the course of the solar cycle, we also derive a lower limit for the reconnection rate of CMEs that is sufficient to avoid the "flux catastrophe" paradox. This rate is well below our threshold of detectability. Subject headings: solar wind - Sun: activity - Sun: corona - Sun: coronal mass ejections (CMEs) - On-line material: color figure Sun: magnetic fields
Document ID
20060010445
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Riley, Pete
(Science Applications International Corp. San Diego, CA, United States)
Goslin, J. T.
(Los Alamos National Lab. NM, United States)
Crooker, . U.
(Boston Univ. Boston, MA, United States)
Date Acquired
August 23, 2013
Publication Date
June 20, 2004
Publication Information
Publication: The Astrophysical Journal
Publisher: American Astronomical Society
Volume: 608
Subject Category
Solar Physics
Funding Number(s)
CONTRACT_GRANT: NAG5-10881
CONTRACT_GRANT: NASW-02027
Distribution Limits
Public
Copyright
Other

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