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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Veröffentlicht in:	Solar physics 2011-05, Vol.270 (1), p.165-173
Hauptverfasser:	Rudenko, G. V., Myshyakov, I. I.
Format:	Artikel
Sprache:	eng
Schlagworte:	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
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	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