An extraordinary new celestial X-ray source

Details An extraordinary new celestial X-ray source An extraordinary new celestial X-ray source

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.287..805g&link_type=abstract

Nature, vol. 287, Oct. 30, 1980, p. 805, 806. Research supported by the Natural Sciences and Engineering Research Council of Can

Astronomy and Astrophysics

Astronomy

88

X Ray Sources, Astronomical Photography, Supernova Remnants

Scientific paper

The discovery of an extraordinary new celestial X-ray source with the Einstein X-ray Observatory is reported. The object, designated G 109.1-1.0, was detected by the imaging proportional counter detector, which is sensitive to energies between 0.1 and 4.5 keV. A longer exposure image of the 1-deg field of view centered on the object reveals a clear semicircular arc which appears to be the outer shell of a supernova remnant, with a strong compact X-ray source at the center. Assuming the object to be a supernova remnant, a distance of 3.6 kpc is estimated, which implies a linear shell diameter of 38 pc, comparable to the Cygnus Loop and the Vela supernova remnant. A jet-like feature is also observed emerging on one side of the central source which is similar to that observed in the unusual object SS 433 and its associated supernova remnant, W 50.

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