Observations of M 100 with the Einstein Observatory shortly after theexplosion of its fourth supernova, SN 1979C.
Abstract
Observations were made of M100 with the Einstein Observatory in the soft X-ray energy band 63, 73, and 234 days after the explosion of the supernova SN 1979c, and no significant detections were found corresponding to any of the four SNe in M100. Upper limits are discussed, and the detection of the nucleus and an X-ray source in the northern spiral is reported. The luminosity of the nucleus is determined at 1.5 x 10 to the 40th ergs/s. Various possibilities for the X-ray source are considered, and it is shown that it is unlikely that the source is a foreground object. In addition, the possibility of a background quasi-stellar-object or a cluster of galaxies covered by M100 is also discussed.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 1981
- DOI:
- 10.1086/159057
- Bibcode:
- 1981ApJ...247..484P
- Keywords:
-
- Galactic Nuclei;
- Heao 2;
- Spaceborne Astronomy;
- Spiral Galaxies;
- Supernovae;
- X Ray Sources;
- Galactic Structure;
- Luminosity;
- Quasars;
- Virgo Galactic Cluster;
- Astronomy