X-ray emission from supernova remnants. II - The effect of remnant structure on nonequilibrium X-ray spectra

Details X-ray emission from supernova remnants. II - The effect of remnant structure on nonequilibrium X-ray spectra X-ray emission from supernova remnants. II - The effect of remnant structure on nonequilibrium X-ray spectra

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...284..601h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 284, Sept. 15, 1984, p. 601-611.

Astronomy and Astrophysics

Astrophysics

39

Interstellar Gas, Nonequilibrium Ionization, Shock Waves, Supernova Remnants, X Ray Sources, X Ray Spectra, Electron Energy, Gas Ionization, Nebulae

Scientific paper

A technique is presented for analyzing the effects of using various SNR models on the projected emitted X-ray spectra, which can be compared with observational data. It is assumed that the spatially integrated X-ray emission originates from collisions between ions and thermal electrons in an ionized plasma arising from gas through which a shock wave has passed. Only hydrodynamic SNR models are considered. Comparisons are made of curves of the Boltzmann-weighted ionization times and temperature as a function of the emission integral. Similar curves imply similar compositions and X-ray spectra. Elemental abundances vary linearly with their contribution to the integrated luminosity. A Sedov solution is shown to be a good approximation for SNR models of emissions produced by ionization close to a shock front. Finally, a similarity solution is demonstrated valid for approximating the spectra of a reverse shock into uniform density ejecta traveling toward a uniform medium.

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