engleski

Measurements of solar rotation using EUV bright points-preliminary results

Full-disc solar images in the extreme ultraviolet part of the spectrum from the SOHO spacecraft (instrument EIT, data in the spectral line of Fe XV at the wavelength of 28.4 nm) are used to identify visually various small-scale coronal structures appropriate for the determination of the solar rotation. From the time differences in tracer positions, approximately six hours, the solar rotation velocity is determined tracing coronal bright points in the period June 4--14, 1998 by four observers. The resulting rotational profiles are mutually compared and the reduction methods are discussed.

solar rotation - coronal bright points - SOHO-EIT

nije evidentirano