Solar differential rotation determined by tracing coronal bright points in SOHO-EIT images

Authors :: Roman Brajša
V. Ruždjak
Frédéric Clette
Jean-François Hochedez
Hubertus Wöhl
Bojan Vršnak
Source :: Astronomy & Astrophysics. 392:329-334
Publication Year :: 2002
Publisher :: EDP Sciences, 2002.
Abstract: Full-disc solar images obtained with the Extreme Ultraviolet Imaging Telescope (EIT) on board the Solar and Heliospheric Observatory (SOHO) were used to analyse solar dierential rotation by tracing coronal bright points. The results obtained with the interactive and the automatic method for the time period June 4, 1998 to May 22, 1999 are presented and compared. A possible north-south rotational asymmetry and dierences in the rotation velocity curves for various subtypes of tracers are investigated.

Subjects :: Physics
Astronomy
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Coronal loop
Tracing
Rotation
Corona
Space and Planetary Science
Observatory
Physics::Space Physics
Extreme ultraviolet Imaging Telescope
Astrophysics::Solar and Stellar Astrophysics
Solar rotation
Differential rotation
Astrophysics::Earth and Planetary Astrophysics
Astrophysics::Galaxy Astrophysics

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