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Magnetic Field Strengths Derived from Various Lines in the Umbral Spectrum
Published online by Cambridge University Press: 14 August 2015
Abstract
Profiles of various lines in the spectra of umbrae are discussed, emphasizing the use of purely umbral lines. In the dark core of a large umbra the field strengths measured from various lines are the same, yielding 3080 ± 50G. In regions with umbral dots the field strengths do depend on the spectral line; the strengths are lower than in the dark core. Some conclusions are discussed.
- Type
- Part III: Observations of Sunspot and Active Region Magnetic Fields
- Information
- Symposium - International Astronomical Union , Volume 43: Solar Magnetic Fields , 1971 , pp. 220 - 222
- Copyright
- Copyright © Reidel 1971
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