Multi-Temperature Structure of the Solar Corona Observed by Yohkoh and SOHO

Details Multi-Temperature Structure of the Solar Corona Observed by Yohkoh and SOHO Multi-Temperature Structure of the Solar Corona Observed by Yohkoh and SOHO

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mwoc.conf...91n&link_type=abstract

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

Physics

Scientific paper

A suite of XUV Doppler Telescope (XDT), Yohkoh Soft X-ray Telescope (SXT) and SOHO Extreme-ultraviolet Imaging Telescope (EIT) images allow us to see whole temperature evolution of coronal loops. We show that hot loops seen in SXT images (T > 3 MK) and cool loops seen in EIT/XDT images (T = 1--2 MK) sometimes exist in spatially alternate way. We follow the time evolution of several hot (SXT) and cool (EIT 195 Å) loops and found that their anti-coincidence is conserved for much longer than their estimated cooling time scales. This suggests that each loop has its own destined heating rate, and that there are high heating-rate loops and low heating-rate (dormant) loops.

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