Large-scale Coronal Heating, Clustering of Coronal Bright Points, and Concentration of Magnetic Flux |
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Authors: | D A Falconer R L Moore J G Porter D H Hathaway |
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Institution: | (1) Marshall Space Flight Center, NASA, USA |
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Abstract: | By combining quiet-region Fe XII coronal images from SOHO/EIT with magnetograms from NSO/Kitt Peak and from SOHO/MDI, we show
that the population of network coronal bright points and the magnetic flux content of the network are both markedly greater
under the bright half of the large-scale quiet corona than under the dim half. These results (1) support the view that the
heating of the entire corona in quiet regions and coronal holes is driven by fine-scale magnetic activity (microflares, explosive
events, spicules) seated low in the magnetic network, and (2) suggest that this large-scale modulation of the magnetic flux
and coronal heating is a signature of giant convection cells.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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Keywords: | coronal heating magnetic network coronal bright points |
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