Abstract
For various groups of photospheric magnetic fields differing in strength, averaged synoptic maps have been obtained from the data of the Kitt Peak National Solar Observatory (1976–2003). The latitudinal profiles of magnetic field fluxes are considered individually for each 5-G field strength interval. Changes in the maxima of the latitude profiles and their localization in the latitude are studied. The results are evidence that the latitudinal distribution of the magnetic fields changes significantly at field strengths of 5, 15, and 50 G. The magnetic flux for groups of fields differing in strength decreases monotonically as the strength increases, starting from B > 5 G; the fluxes of the southern hemisphere exceed those of the northern hemisphere. A very special group is formed by the weakest fields with B < 5 G, which are opposite in phase to stronger fields in terms of localization and time changes.
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Akhtemov, Z.S., Andreyeva, O.A., Rudenko, G.V., Stepanian, N.N., and Fainshtein, V.G., Variations over time in latitudinal distribution of the large-scale magnetic fields in the solar atmosphere at heights from the photosphere to the source surface, Adv. Space Res., 2015, vol. 55, no. 3, pp. 968–978.
Deng, L., Qu, Z., Dun, G., and Xu, C., Phase relationship between polar faculae and sunspot numbers revisited: Wavelet transform analyses, Publ. Astron. Soc. Jpn., 2013, vol. 65, no. 11, pp. 1–7.
Harvey, J., Measurements of the solar polar magnetic field, 1996. http://www.noao.edu/noao/staff/jharvey/pole.ps.
Hathaway, D.H., The solar cycle, Living Rev. Sol. Phys., 2015, vol. 12, no. 4, pp. 1–87.
Hoeksema, J.T., Global solar magnetic fields, J. Geomagn. Geoelectr., 1991, vol. 43, no. 1, pp. 59–70.
Ivanov, V.G., Miletskii, E.V., and Nagovitsyn, Yu.A., Form of the latitude distribution of sunspot activity, Astron. Rep., 2011, vol. 55, no. 10, pp. 911–917.
Jin, C.L. and Wang, J.X., Variation of the solar magnetic flux spectrum during solar cycle 23, J. Geophys. Res.: Space Phys., 2014, vol. 119, pp. 11–17.
Li, K.J., Yun, H.S., and Gu, X.M., Latitude migration of sunspot groups, Astrophys. J., 2001, vol. 122, pp. 2115–2117.
Makarov, V.I. and Makarova, V.V., Polar faculae and sunspot cycles, Sol. Phys., 1996, vol. 163, pp. 267–289.
Miletsky, E.V., Ivanov, V.G., and Nagovitsyn, Yu.A., Some properties of latitude-time evolution of local and background solar magnetic fields, Adv. Space Res., 2015, vol. 55, no. 3, pp. 780–786.
Muñoz-Jaramillo, A., Sheeley, N.R., Zhang, J., and DeLuca, E.E., Calibrating 100 years of polar faculae measurements: Implications for the evolution of the heliospheric magnetic field, Astrophys. J., 2012, vol. 753, no. 146, pp. 1–14.
Sheeley, N.R., Jr., A century of polar faculae variations, Astrophys. J., 2008, vol. 680, pp. 1553–1559.
Vernova, E.S., Tyasto, M.I., and Baranov, D.G., Latitudinal distribution of photospheric magnetic fields of different magnitudes, Sol. Phys., 2016, vol. 291, pp. 741–750.
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Vernova, E.S., Tyasto, M.I. & Baranov, D.G. Latitudinal Profiles of the Photospheric Magnetic Field in Solar Cycles 19–21. Geomagn. Aeron. 57, 940–945 (2017). https://doi.org/10.1134/S0016793217080254
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DOI: https://doi.org/10.1134/S0016793217080254