Journal of The Korean Astronomical Society (천문학회지)
- Volume 3 Issue 1
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- Pages.1-5
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- 1970
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
A Study Based on Na $D_2$ Profiles in Sunspots
Abstract
The earlier findings on the radiative heating through the umbral walls in large sunspots are further investigated. No significant evidence for the umbra! heating has been found in small-sized sunspot umbrae.
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