Abstract
The Sun’s polar magnetic field can play important roles in several physical processes such as solar dynamos, solar coronal heating, and solar wind acceleration. The first Hinode Solar Optical Telescope observations of the polar areas revealed the existence of many patches with intrinsic field strengths of over 1 kG distributed across the entire polar region. Hinode monitoring of both polar areas revealed that the distribution of the magnetic patches consists of two different components: a polarity-imbalanced component that consists of large patches and varies with the solar cycle and a stable well-balanced components consisting of small patches. It is important to continue monitoring of the polar regions to understand the formation process of the polar field in the current solar cycle.
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References
Lites, B.W., et al.: The Hinode spectro-polarimeter. Sol. Phys. 283, 579 (2013). https://doi.org/10.1007/s11207-012-0206-3
Miyahara, H., et al.: Cyclicity of solar activity during the Maunder minimum deduced from radiocarbon content. Sol. Phys. 224, 317 (2004). https://doi.org/10.1007/s11207-005-6501-5
Miyahara, H., et al.: Is the Sun heading for another Maunder minimum? – Precursors of the grand solar minima. J. Cosmol. 8, 1970 (2010)
Schatten, K.H., Scherrer, P.H., Svalgaard, L., Wilcox, J.M.: Using dynamo theory to predict the sunspot number during solar cycle 21. Geophys. Res. Lett. 5, 411 (1978). https://doi.org/10.1029/GL005i005p00411
Shiota, D., et al.: Polar field reversal observations with Hinode. ApJ 753, 157 (2012). https://doi.org/10.1088/0004-637X/753/2/157
Sokoloff, D., Nesme-Ribes, E.: The Maunder minimum: a mixed-parity dynamo mode? A&A 288, 293 (1994)
Svalgaard, L., Duvall, T.L. Jr, Scherrer, P.H.: The strength of the Sun’s polar fields. Sol. Phys. 58, 225 (1978). https://doi.org/10.1007/BF00157268
Svalgaard, L., Cliver, E.W., Kamide, Y.: Sunspot cycle 24: smallest cycle in 100 years? Geophys. Res. Lett. 32, L01104 (2005). https://doi.org/10.1029/2004GL021664
Tsuneta, S., et al.: The magnetic landscape of the Sun’s polar region. ApJ 688, 1374–1381 (2008). https://doi.org/10.1086/592226
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Shiota, D. (2018). Hinode Observation of the Sun’s Polar Magnetic Field and Solar Cycle Variation. In: Shimizu, T., Imada, S., Kubo, M. (eds) First Ten Years of Hinode Solar On-Orbit Observatory. Astrophysics and Space Science Library, vol 449. Springer, Singapore. https://doi.org/10.1007/978-981-10-7742-5_16
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DOI: https://doi.org/10.1007/978-981-10-7742-5_16
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