The rotation of the solar coronal holes was studied. Data from the Kitt Peak Observatory in the line 10830 Å He I for 2003—2012 was used for this purpose. The rotation of 434 coronal holes in the latitude interval ±40° was studied. The maximum angular velocity is observed at latitudes ±15°. Coronal holes have a lower angular velocity (13.39 deg/day) and rotate less differentially than the solar photosphere.
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Translated from Astrofizika, Vol. 58, No. 4, pp. 609-613 (November 2015).
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Japaridze, D.R., Bagashvili, S.R., Shergelasvili, B.M. et al. Investigation of Solar Rotation Using Coronal Holes. Astrophysics 58, 575–579 (2015). https://doi.org/10.1007/s10511-015-9409-2
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DOI: https://doi.org/10.1007/s10511-015-9409-2