Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh43a1812l&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SH43A-1812
Astronomy and Astrophysics
Astrophysics
[7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections, [7519] Solar Physics, Astrophysics, And Astronomy / Flares, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields, [7954] Space Weather / Magnetic Storms
Scientific paper
Solar flares and CMEs are the coronal manifestations of rapid magnetic free energy release. Intense flares and very fast CMEs, which pose serious space weather threats, originate from large magnetic active regions. The magnetic field evolution and configuration of source active regions hold the key to understanding the cause of large solar eruptions. For recurrent flares and CMEs from the same source region, the eruptive stressed core field, magnetic field topology and the coronal plasma environment are similar for each eruption. The eruptive state can be reestablished and the time scale to introduce the free energy that drives a recurrent eruption is constrained by the occurrence of adjacent events. We present analyses of the source region of four X-class flares and several extremely fast CMEs in January 2005.
Fisher George H.
Li Yadong
Luhmann Janet G.
Lynch Benjamin J.
Welsch Brian Thomas
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