Physics
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.1801m&link_type=abstract
American Astronomical Society Meeting 204, #18.01; Bulletin of the American Astronomical Society, Vol. 36, p.682
Physics
Scientific paper
We present an example of each of the following observed characteristics of the magnetic origins of quiet-region coronal heating, spicules, macrospicules, and coronal mass ejections (CMEs). (1) In quiet regions, the luminosity of the corona is roughly proportional to the edge length of the underlying photospheric magnetic network (Falconer et al 2003, ApJ, 593, 549). (2) Spicules and EUV explosive events are concentrated at the edges of the magnetic network (e.g., Beckers, J. M. 1968, Sol. Phys., 3, 367; Porter, J. G. & Dere, K. P. 1991, ApJ, 370, 775). (3) Many macrospicules have the magnetic structure of a surge rooted around an inclusion of opposite-polarity magnetic flux (Yamauchi, Y. et al 2004, ApJ, in press). (4) CMEs and eruptive flares are driven by explosions of sheared magnetic fields rooted along polarity dividing lines (neutral lines) in the photospheric magnetic flux (e.g., Moore, R. L. et al 2001, ApJ, 552, 833). These characteristics together suggest that the mainstay of the heliosphere, the corona/solar wind rooted in quiet regions and coronal holes, may be driven by myriads of tiny magnetic explosions at the network edges, explosions like those that drive CMEs but of vastly smaller scale. If so, the steady solar wind and the CMEs that disrupt it both have the same root cause: explosions of initially- closed, strongly-sheared, bipolar magnetic fields. The photospheric vector magnetograms, chromospheric filtergrams, EUV spectra, and coronal images from Solar-B are expected to have sufficient sensitivity, spatial resolution, and cadence to test this scenario for coronal heating in quiet regions and coronal holes. This work was supported by NASA/OSS through its Solar & Heliospheric Physics SR&T Program and Sun-Earth Connection GI Program.
Moore Robert L.
Yamauchi Yoshiaki
No associations
LandOfFree
Solar Magnetic Explosions, Spicules, and the Heliosphere 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 Solar Magnetic Explosions, Spicules, and the Heliosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar Magnetic Explosions, Spicules, and the Heliosphere will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1170692