Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992rrgo.conf...12a&link_type=abstract
In its Contributions to the Joint Discussion 3: Results from Rosar and GRO and Other Recent High Energy Astrophysics Missions of
Astronomy and Astrophysics
Astrophysics
Astrophysics, Cygnus Constellation, Morphology, Rosat Mission, Sky Surveys (Astronomy), Spectral Resolution, Supernova Remnants, Brightness Distribution, Brightness Temperature, Pressure Distribution, Spaceborne Astronomy, Statistical Distributions, X Ray Astronomy
Scientific paper
Spectrally resolved X-ray images of the Cygnus Loop and the Vela supernova remnant obtained during the ROSAT all sky survey are discussed. The remnants show highly filamentary brightness distributions. Temperatures between 1,000,000 and 10,000,000 K were measured. Both remnants show significant deviation from thermal pressure equilibrium. The highest pressure excursions of up to a factor of 50 are associated with the X-ray brightest filaments. Pressure variations are expected for very recently shocked clouds, on a smaller scale though. In a limited search of the all sky survey data 14 extended objects were found, tentatively identified as previously unknown supernova remnants. A total number of approximately 60 new remnants are expected from the analysis of the full sky.
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