Posteruptive phenomena in coronal mass ejections and substorms: Indicators of a universal process?

Details Posteruptive phenomena in coronal mass ejections and substorms: Indicators of a universal process? Posteruptive phenomena in coronal mass ejections and substorms: Indicators of a universal process?

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jgra..11300b02r&link_type=abstract

Journal of Geophysical Research, Volume 113, Issue A7, CiteID A00B02

Astronomy and Astrophysics

Astrophysics

5

Magnetospheric Physics: Magnetic Reconnection (7526, 7835), Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections (2101), Solar Physics, Astrophysics, And Astronomy: Flares, Magnetospheric Physics: Magnetic Storms And Substorms (7954)

Scientific paper

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.

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