Physics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.2301f&link_type=abstract
American Astronomical Society, 194th AAS Meeting, #23.01; Bulletin of the American Astronomical Society, Vol. 31, p.860
Physics
Scientific paper
In Fe XII images from SOHO/EIT, the quiet solar corona shows structure on scales ranging from sub-supergranular (i.e., bright points and coronal network) to multi-supergranular. In Falconer et al 1998 (Ap.J., 501, 386) we suppressed the large-scale background and found that the network-scale features are predominantly rooted in the magnetic network lanes at the boundaries of the supergranules. The emission of the coronal network and bright points contribute only about 5% of the entire quiet solar coronal Fe XII emission. Here we investigate the large-scale corona, the supergranular and larger-scale structure that we had previously treated as a background, and that emits 95% of the total Fe XII emission. We compare the dim and bright halves of the large-scale corona and find that the bright half is 1.5 times brighter than the dim half, has an order of magnitude greater area of bright point coverage, has three times brighter coronal network, and has about 1.5 times more magnetic flux than the dim half. These results suggest that the brightness of the large-scale corona is more closely related to the large-scale total magnetic flux than to bright point activity. We conclude that in the quiet sun: (1) Magnetic flux is modulated (concentrated/diluted) on size scales larger than supergranules. (2) The large-scale enhanced magnetic flux gives an enhanced, more active, magnetic network and an increased incidence of network bright point formation. (3) The heating of the large-scale corona is dominated by more widespread, but weaker, network activity than that which heats the bright points. This work was funded by the Solar Physics Branch of NASA's office of Space Science through the SR&T Program and the SEC Guest Investigator Program.
Falconer David Allen
Hathaway David H.
Moore Robert L.
Porter Jason G.
No associations
LandOfFree
Large-Scale Coronal Heating from the Solar Magnetic Network does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Large-Scale Coronal Heating from the Solar Magnetic Network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large-Scale Coronal Heating from the Solar Magnetic Network will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1120075