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JOURNAL OF GEOPHYSICAL RESEARCH,
VOL. 113,
A00B02,
10 PP., 2008
doi:10.1029/2008JA013049
Posteruptive phenomena in coronal mass ejections and substorms: Indicators of a universal process?
Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA
The Aerospace Corporation, Chantilly, Virginia, USA
Department of Astronomy, Boston University, Boston, Massachusetts, USA
Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA
Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA
Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA
Department of Physics, Montana State University, Bozeman, Montana, USA
Department of Astronomy, Boston University, Boston, Massachusetts, USA
Department of Astronomy, Boston University, Boston, Massachusetts, USA
Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts, USA
High Altitude Observatory, National Center for Atmospheric Research, Boulder, Colorado, USA
We examine phenomena associated with eruptions in the two different regimes of the solar corona and the terrestrial magnetosphere. We find striking similarities between the speeds of shrinking magnetic field lines in the corona and dipolarization fronts traversing the magnetosphere. We also examine the similarities between supra-arcade downflows observed during solar flares and bursty bulk flows seen in the magnetotail and find that these phenomena have remarkably similar speeds, velocity profiles, and size scales. Thus we show manifest similarities in the magnetic reconfiguration in response to the ejection of coronal mass ejections in the corona and the ejection of plasmoids in the magnetotail. The subsequent return of loops to a quasi-potential state in the corona and field dipolarization in the magnetotail are physical analogs and trigger similar phenomena such as downflows, which provides key insights into the underlying drivers of the plasma dynamics.
Received 23 January 2008; accepted 16 April 2008; published 9 July 2008.
Citation: (2008), Posteruptive phenomena in coronal mass ejections and substorms: Indicators of a universal process?, J. Geophys. Res., 113, A00B02, doi:10.1029/2008JA013049, [printed 114(A9), 2009].
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