Solar Filaments and Photospheric Network

The locations of barbs of quiescent solar filaments are compared with the photospheric/chromospheric network, which thereby serves as a proxy of regions with enhanced concentrations of magnetic flux. The study covers quiet regions, where also the photospheric network as represented by flow convergin...

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Bibliographic Details
Published in:Solar physics 2005-04, Vol.227 (2), p.283-297
Main Authors: Lin, Yong, Wiik, Jun Elin, Engvold, Oddbjoern, Voort, Luc Rouppe, Frank, Zoe A
Format: Article
Language:English
Subjects:
Boundaries
Magnetic fields
Solar physics
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Summary:The locations of barbs of quiescent solar filaments are compared with the photospheric/chromospheric network, which thereby serves as a proxy of regions with enhanced concentrations of magnetic flux. The study covers quiet regions, where also the photospheric network as represented by flow converging regions, i.e., supergranular cell boundaries, contain largely weak magnetic fields. It is shown that close to 65% of the observed end points of barbs falls within the network boundaries. The remaining fraction points into the inner areas of the network cells. This confirms earlier findings (Lin et al., Solar Physics, 2004) that quiescent filaments are basically connected with weaker magnetic fields in the photosphere below.
ISSN:0038-0938
1573-093X
DOI:10.1007/s11207-005-1111-9