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

Details The Neareset Star: Emission Structure of the Sun's corona The Neareset Star: Emission Structure of the Sun's corona

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.9508l&link_type=abstract

American Astronomical Society Meeting 204, #95.08; Bulletin of the American Astronomical Society, Vol. 36, p.827

Astronomy and Astrophysics

Astronomy

Scientific paper

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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