The 10th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun

Abstract

We describe a Markov-Chain Monte-Carlo process using a Metropolis algorithm to derive Differential Emission Measures (DEMs) and element abundances from EUV line fluxes. This technique allows us to relax the smoothness constraint generally imposed on DEMs and also to determine confidence bounds on the computed values. We apply this method to solar spectral line data from SERTS (Solar EUV Rocket Telescope and Spectrograph).

PostScript File

kashyav1.ps   (446 kB)

Sections

1. Introduction

2. Algorithm

3. SERTS Data

4. Results

Submitted Materials

These 8 files all use the Ov applet.

• f1QFlRay.htm - Active Region Emission Measures, Feldman et al. abundances, Raymond ion balances
• f1QFlRot.htm - Active Region Emission Measuress, Feldman et al. abundances, Rothenflug ion balances
• f1QGrRay.htm - Active Region Emission Measures, Grevesse, et al. abundances, Raymond ion balances
• f1QGrRot.htm - Active Region Emission Measures, Grevesse, et al. abundances, Rothenflug ion balances
• f1QFlRay.htm - Quiet Sun Emission Measuress, Feldman et al. abundances, Raymond ion balances
• f1QFlRot.htm - Quiet Sun Emission Measuress, Feldman et al. abundances, Rothenflug ion balances
• f1QGrRay.htm - Quiet Sun Emission Measures, Grevesse, et al. abundances, Raymond ion balances
• f1QGrRot.htm - Quiet Sun Emission Measures, Grevesse, et al. abundances, Rothenflug ion balances

Objects

• Sun

References

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Bibliographical Information

V. Kashyap and J. Drake 1998, in ASP Conf. Ser. 154, The Tenth Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, eds. R.A. Donahue & J.A. Bookbinder (San Francisco: ASP), 844

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