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Title:
A ROSAT observation of the supernova remnant Kes 79
Authors:
Seward, F. D.; Velusamy, T.
Affiliation:
AA(Harvard Smithsonian Center for Astrophysics, Cambridge, MA, US), AB(Harvard Smithsonian Center for Astrophysics, Cambridge, MA, US)
Publication:
The Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 439, no. 2, p. 715-721 (ApJ Homepage)
Publication Date:
02/1995
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
INTERSTELLAR MATTER, RADIO OBSERVATION, STELLAR ENVELOPES, SUPERNOVA REMNANTS, X RAY ASTRONOMY, X RAY SPECTRA, ASTRONOMICAL MODELS, BRIGHTNESS, EMISSION SPECTRA, LUMINOSITY, ROSAT MISSION, SHOCK WAVE LUMINESCENCE, SPECTRUM ANALYSIS
DOI:
10.1086/175211
Bibliographic Code:
1995ApJ...439..715S

Abstract

Kes 79 was observed with the ROSAT Position Sensitive Proportional Counter (PSPC) and High Resolution Imager (HRI). Some X-ray emission comes from a faint outer region, well correlated with the outer shell. Most emission is from a bright diffuse inner region where there are also bright radio filaments. The X-ray spectrum is fitted with a thermal model with temperature 1.3 keV. Variations in spectra from different regions are small. There is no X-ray evidence for an internal neutron star. Remnant characteristics are derived using a simple blast-wave model. The observed X-ray absorption is less than expected. It is possible that the remnant is closer than the published distance of 10 kpc.

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