Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258...22p&link_type=abstract
Astrophysical Journal, Part 1, vol. 258, July 1, 1982, p. 22-30.
Astronomy and Astrophysics
Astrophysics
70
Interstellar Matter, Shock Waves, Supernova Remnants, X Ray Sources, Brightness, Density Distribution, High Resolution
Scientific paper
Eleven HRI exposures from the Einstein Observatory are assembled into an 0.1-4 keV image of the Puppis A supernova remnant which displays a complex morphology that may reflect the structure of the shocked interstellar medium. In addition to showing a density gradient of a factor greater than four across the approximately 30 pc diameter of the remnant perpendicular to the galactic plane, a shell of X-ray emission is seen surrounding the northern half of Puppis A, coincident with the radio shell, whose edge brightness profile indicates direct hot plasma heating by the blast wave rather than evaporation from clouds. The interior structure of the supernova remnant suggests inhomogeneities whose sizes range over 0.1-5 pc, but with moderate density contrast. Although isolated clouds of 10-30/cu cm density are responsible for the two brightest X-ray features, they represent only a small fraction of the Puppis A mass.
Canizares Calude R.
Kriss Gerard Anthony
Petre Rob
Winkler Frank P.
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