Gauge-Invariant Helicity for Force-Free Magnetic Fields in a Rectangular Box

An algorithm for calculating the gauge-invariant helicity of a magnetic field specified in a rectangular box is described. The algorithm has been tested and confirmed on a well-known semi-analytic force-free-field model of Low and Lou ( Astrophys. J. 352 , 343, 1990 ) which we have re-formulated in...

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Bibliographic Details
Published in:Solar physics 2011-05, Vol.270 (1), p.165-173
Main Authors: Rudenko, G. V., Myshyakov, I. I.
Format: Article
Language:English
Subjects:
Algorithms
Astrophysics and Astroparticles
Atmospheric Sciences
Corona
Magnetic fields
Physics
Physics and Astronomy
Solar physics
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Sun
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Summary:An algorithm for calculating the gauge-invariant helicity of a magnetic field specified in a rectangular box is described. The algorithm has been tested and confirmed on a well-known semi-analytic force-free-field model of Low and Lou ( Astrophys. J. 352 , 343, 1990 ) which we have re-formulated in terms of the vector potential.
ISSN:0038-0938
1573-093X
DOI:10.1007/s11207-011-9743-4