Two X-ray supernova remnants : G 296.1-0.7 and 1E 1149.4-6209.
Abstract
Using the imaging X-ray detectors on the Einstein Observatory, what appear to be two overlapping galactic supernova remnants are discovered, one of which is clearly identified with the previously cataloged radio remnant G296.1-0.7. The other feature has no radio or optical counterpart. It is a nearly complete ring with a diameter of 20-25 arcmin, designated 1E 1149.4-6209. Because of its morphology, because there is evidence for supernova events in the vicinity, and because there seems to be no plausible alternative, 1E 1149.4-6209 is classified as a supernova remnant. This remnant and others like it, which may be found first in X-rays rather than radio or optical waves, may have important implications regarding the evolution of supernova remnants and the rate of supernovae in our Galaxy.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 1981
- DOI:
- 10.1086/183614
- Bibcode:
- 1981ApJ...248L..17M
- Keywords:
-
- Galactic Evolution;
- Radio Sources (Astronomy);
- Supernova Remnants;
- X Ray Sources;
- Astronomical Maps;
- Fourier Transformation;
- Nebulae;
- Astrophysics