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Emission Lines From Hot Astrophysical Plasmas

Published online by Cambridge University Press:  12 April 2016

John C. Raymond
John C. Raymond*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA

Abstract

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The spectral lines which dominate the X-ray emission of hot, optically thin astrophysical plasmas reflect the elemental abundances, temperature distribution, and other physical parameters of the emitting gas. The accuracy and level of detail with which these parameters can be inferred are limited by the measurement uncertainties and uncertainties in atomic rates used to compute the model spectrum. This paper discusses the relative importance and the likely uncertainties in the various atomic rates and the likely uncertainties in the overall ionization balance and spectral line emissivities predicted by the computer codes currently used to fit X-ray spectral data.

Type
1. X-rays from a Hot Plasma
Information
International Astronomical Union Colloquium , Volume 115: High Resolution X-ray Spectroscopy of Cosmic Plasmas , 1990 , pp. 1 - 10
Copyright
Copyright © Cambridge University Press 1990

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