AAS 204th Meeting, June 2004
Session 95 Coronal Heating Theory and Observations
SPD Oral, Thursday, June 3, 2004, 2:00-3:30pm, 704

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[95.08] The Neareset Star: Emission Structure of the Sun's corona

L. Lin, V. L. Kashyap, J. J. Drake, E. E. DeLuca, M. A. Weber, A. L. Sette (Harvard-Smithsonian Center for Astrophysics)

We describe the application of a sophisticated differential emission measure (DEM) reconstruction technique to solar observations by Yohkoh, TRACE, SOHO, and GOES. Based on a Markov-Chain Monte Carlo algorithm originally developed for use with high resolution stellar EUV and X-ray spectra, the method is easily adapted to any combination of observations with different instruments and filters. We derive DEMs over the temperature range \log{T}=5.5-7.5 using full disk solar observations from the various telescopes to mimic the appearance of the Sun as a distant star. We then compare the DEMs thus derived with those obtained for stars based on EUV and X-ray spectroscopy. We also explore the extent to which Solar-B will enhance our understanding of the underlying temperature structure of the Solar corona, and describe new methods to apply to the data cube of a typical Solar-B XRT observation.

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