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Rotation of Solar Corona from Tracking of Coronal Bright Points View all abstracts by submitter

Nina Karachik   Submitted: 2011-04-21 11:44

An automated procedure for identification of coronal bright points is applied to selected EIT images observed at various phases of the solar cycle. The procedure finds about 400 bright points on a single EIT image observed at 195 . The positions of the bright points are tracked to study the profile of solar rotation in the solar corona. It is shown that the rotation of coronal bright points closely follows the latitudinal rotation profile of the underlying photospheric magnetic field. It is also demonstrated that coronal features situated at the same heliographic coordinates but different heights in the corona may exhibit different rotation rates.


Authors: Karachik Nina, Pevtsov Alexei A. and Sattarov Isroil
Projects: SoHO-EIT

Publication Status: Published in The Astrophysical Journal
Last Modified: 2011-04-22 06:33
Go to main E-Print page  Solar Cycle 23 in Coronal Bright Points  Formation of Coronal Holes on the Ashes of Active Regions  Edit Entry  Download Preprint  Delete Entry 

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