Rotation of active regions and coronal holes from observations of the Sun in the line He I λ 1083 nm

Heading: 
Astronomy and Astrophysics
1Zyelyk, Ya.I, 2Stepanian, NN, 3Andreyeva, OA
1Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, Kyiv, Ukraine
2Scientific-Research Institute “Crimean Astrophysical Observatory” of the Ministry for Education and Science of Ukraine, Nauchny, AR Crimea, Ukraine
3Scientific-Research Institute “Crimean Astrophysical Observatory” of the Ministry for Education and Science of Ukraine, Nauchny, Crimea, Ukraine
Kosm. nauka tehnol. 2004, 10 ;(5-6):138-140
https://doi.org/10.15407/knit2004.05.138
Publication Language: Russian
Abstract: 
Some methods of the spectral analysis of time series are applied to the study of the rotation of coronal holes, plagues and active regions with sunspot groups on the basis of the observations in the line He I λ 1083 nm. The mean characteristics for the rotation of these formations during three solar cycles are derived. The rotation changes with latitude and time are determined for 21 cycles.
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References: 
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