Abstract
The results of a spherical harmonic analysis and a sector spherical harmonic analysis of the solar magnetic field on the photosphere, source surface, and in the Earth’s orbit on July 10–20, 2004, were compared. It was found that the field values according to a sector harmonic analysis are an order of magnitude as large as the same values according to a spherical harmonic analysis and differ in the configuration. A twocomponent magnetic field structure was revealed: short-range sources are better described by a sector spherical harmonic analysis; long-range sources are better described by a spherical harmonic analysis. This is caused by the different depths of the occurrence of sources below the photosphere.
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Ivanov, K.G. and Kharshiladze, A.F., Comparison of the sector and usual spherical harmonic analyses of the solar magnetic field in July 2004, Geomagn. Aeron. (Engl. Transl.), 2014, vol. 54, no. 3, pp. 275–277.
Kharshiladze, A.F. and Ivanov, K.G., Sector spherical harmonic analysis of the solar magnetic field, Geomagn. Aeron. (Engl. Transl.), 2013, vol. 53, no. 1, pp. 1–4.
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Original Russian Text © K.G. Ivanov, A.F. Kharshiladze, 2016, published in Geomagnetizm i Aeronomiya, 2016, Vol. 56, No. 1, pp. 133–136.
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Ivanov, K.G., Kharshiladze, A.F. Comparison of the sector and conventional spherical harmonic analyses of the solar magnetic field on the photosphere, source surface, and in the Earth’s orbit on July 10–20, 2004. Geomagn. Aeron. 56, 125–128 (2016). https://doi.org/10.1134/S0016793216010072
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DOI: https://doi.org/10.1134/S0016793216010072