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


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DEM Reconstruction: A Markov-Chain Monte-Carlo Approach

Vinay Kashyap and Jeremy Drake

Smithsonian Astophysical Observatory, 60 Garden St., Cambridge, MA 02138

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.

Objects


References


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

ADS record for this paper


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