Differential Rotation of the Soft-X-Ray Corona over a Solar Cycle

Details Differential Rotation of the Soft-X-Ray Corona over a Solar Cycle Differential Rotation of the Soft-X-Ray Corona over a Solar Cycle

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mwoc.conf..347w&link_type=abstract

Multi-Wavelength Observations of Coronal Structure and Dynamics -- Yohkoh 10th Anniversary Meeting. Proceedings of the conferenc

Computer Science

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Scientific paper

The Yohkoh Soft X-ray Telescope has provided unprecedented, high spatial and temporal resolution of the solar corona in X-rays for nearly a complete activity cycle. Building upon earlier work, we perform time-series analysis on bins of the full-disk images (SFDs) to describe the differential rotation of the corona over latitude and cycle phase. The bins are formed by integrating over localized regions in heliographic longitude and latitude. We find that the rotation signal in the data comprises a few (usually two) components which are relatively rigid with respect to time and latitude. The relative strength of these components varies over latitude, which may be the reason previous analyses have indicated a ``slightly differential'' rotation profile over latitude.

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