Article
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The Effect of Elemental Abundances on Fitting Supernova Remnant Models to Data
Version 1
: Received: 23 April 2022 / Approved: 27 April 2022 / Online: 27 April 2022 (05:17:30 CEST)
A peer-reviewed article of this Preprint also exists.
Leahy, D.A. The Effects of Elemental Abundances on Fitting Supernova Remnant Models to Data. Universe 2022, 8, 274. Leahy, D.A. The Effects of Elemental Abundances on Fitting Supernova Remnant Models to Data. Universe 2022, 8, 274.
Abstract
The X-ray emission from a supernova remnant (SNR) is a powerful diagnostic of the state of the shocked plasma, and, given a model, can be used to determine the energy of the explosion, the age of the SNR and the density of the surrounding medium. Observed properties are shock radius, electron temperature (kTe) and emission measure (EM) of the shocked-gas. The standard and XSPEC definitions have an important difference. The XSPEC definition is superior for SNRs, which have components with low hydrogen abundance. SNR model calculations are based on hydrodynamic solutions for fluid variables of density, pressure and velocity. The relations between fluid variables and kTe or EM depend on composition, ionization state and electron-ion temperature ratio (Te/TI). Here the effects of composition, ionization and Te/TI on standard and on XSPEC versions of kTe and EM are investigated.
Keywords
supernova remnants; supernova energetics; interstellar medium density
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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