Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..281v&link_type=abstract
International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 281 - 282
Astronomy and Astrophysics
Astrophysics
Supernova Remnants: X Rays, Supernova Remnants: Infrared Radiation, Supernova Remnants: Shock Waves, Cygnus Loop
Scientific paper
Using ROSAT PSPC and IRAS data, the authors are beginning an observational analysis of grain evolution behind nonradiative shock waves in the Cygnus Loop and Pup A supernova remnants. They have constructed a dynamic theoretical model of grain evolution through steady-state nonradiative shocks. This model is a self-consistent treatment of the effect of grain destruction, thermal heating, and deceleration on the ionization structure and X-ray emission of the postshock gas. The authors make specific predictions about the X-ray spectrum emanating from a postshock plasma, as well as thermal IR emissions due to grain heating. Their predictions have agreed favorably with previous global X-ray and IR luminosity observations of the Cygnus Loop (Vancura et al. 1994). Both the Cygnus Loop and Pup A, by virtue of coincident IR and X-ray enhancements, are prime candidates for dusty shock waves. The authors discuss preliminary fits of their model predictions to the spectral shape of the SE Cygnus Loop blast wave X-ray emissions.
Raymond Jack
Vancura Olaf
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