Volume 6 Issue 3
Aug.  1986
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Tong Yi, Du Jin-sheng. The Explanation of Umbral Dot of Sunspot[J]. Journal of Space Science, 1986, 6(3): 192-195. doi: 10.11728/cjss1986.03.192
Citation: Tong Yi, Du Jin-sheng. The Explanation of Umbral Dot of Sunspot[J]. Journal of Space Science, 1986, 6(3): 192-195. doi: 10.11728/cjss1986.03.192

The Explanation of Umbral Dot of Sunspot

doi: 10.11728/cjss1986.03.192
  • Received Date: 1985-11-17
  • Rev Recd Date: 1900-01-01
  • Publish Date: 1986-08-24
  • In this paper, the form of umbral dots of sunspot was satisfactorily explained by a mechanism of local perturbations in a magnetic tube of sunspot along with the theory of Petschek’s neutral sheet. On the other hand, the special properties of umbral dots of sunspot such as the temperature, magnetic field and its life-time were estimated by Petschek’s formulae. The obtained results were agreed fairly well with observations.

     

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