Relationship of the Magnetic-Field Strength and the Brightness of the Sunspot Umbra and the Center of a Facular Knot |
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| Authors: | Zhivanovich I Solov’ev A A Efremov V I Miller N O |
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| Institution: | 1.Central Astronomical Observatory, Russian Academy of Science, St. Petersburg, Russia
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| Abstract: | Geomagnetism and Aeronomy - Two main features define a sunspot as an object: a strong magnetic field and a low umbra temperature. The same can be said about a facular knot, in the center of which... |
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