Coronal Patterns of Activity from Yohkoh and SOHO/EIT Data

Details Coronal Patterns of Activity from Yohkoh and SOHO/EIT Data Coronal Patterns of Activity from Yohkoh and SOHO/EIT Data

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mwoc.conf..329b&link_type=abstract

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

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Scientific paper

We have studied the evolution of large-scale coronal structures using soft X-ray data from YOHKOH and EUV data from SOHO/EIT during the rising phase of the current solar cycle 23, and compared with the evolution of the photospheric magnetic field. During this period the distribution of the coronal structures generally reflects the evolution of the magnetic fields. However, the data from EIT and YOHKOH reveal large-scale magnetic connections in the corona which probably play significant role in the solar cycle. In particular, we have found that coronal structures such as high-latitude giant loops may be important for the topological evolution of magnetic structures during the solar cycle and for polar magnetic field reversals. We discuss possible mechanisms of the polar magnetic field reversals and their relations to the observed coronal structures.

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