Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...314..782g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 314, March 15, 1987, p. 782-794. NASA-USAF-supported research.
Astronomy and Astrophysics
Astrophysics
111
Astronomical Photography, Chromosphere, Magnetic Effects, Solar Flares, Solar Magnetic Field, Energy Storage, H Alpha Line, Solar Corona
Scientific paper
A unique coordinated data set consisting of vector magnetograms, H-alpha photographs, and high-resolution ultraviolet images of a solar active region is used, together with mathematical models, to calculate potential and force-free magnetic field lines and to examine the nonpotential nature of the active region structure. It is found that the overall bipolar magnetic field of the active region had a net twist corresponding to net current of order 3 x 10 to the 12th A and average density of order 4 x 10 to the -4th A/sq m flowing antiparallel to the field. There were three regions of enhanced nonpotentiality in the interior of the active region; in one the field had a marked nonpotential twist or shear with height above the photosphere. The measured total nonpotential magnetic energy stored in the entire active region was of order 10 to the 32nd ergs, about 3 sigma above the noise level.
Gary Gilmer A.
Hagyard Mona J.
Haisch Bernhard M.
Moore Robert L.
No associations
LandOfFree
Nonpotential features observed in the magnetic field of an active region 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 Nonpotential features observed in the magnetic field of an active region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonpotential features observed in the magnetic field of an active region will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1452927