Some implications of the X-ray data from old supernova remnants

Details Some implications of the X-ray data from old supernova remnants Some implications of the X-ray data from old supernova remnants

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.175..573c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 175, June 1976, p. 573-586.

Statistics

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Astronomical Models, Shock Wave Propagation, Supernova Remnants, X Ray Sources, Adiabatic Flow, Galactic Radiation, Gas Expansion, Radiant Flux Density, Variance (Statistics)

Scientific paper

Several old supernova remnants emit soft X-rays. With certain assumptions, and using a standard adiabatic shock-wave model, values for the initial blast energy of a supernova and the age of its remnants may be estimated. These parameters are evaluated using the most recently available X-ray and radio results for four old supernova remnants. The data imply high ratios of initial blast energy to interstellar density and comparatively young ages for the remnants. These conclusions, while at variance with some earlier estimates based on optical and radio data, support the results of a statistical analysis of the most recent catalog of radio remnants. Predicted X-ray fluxes for other supernova remnants lying within 6 kpc of the sun are presented as a guide to future observational programs.

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