Discovery of a New Component in the Gravitationally Lensed Quasar 0957+561
Abstract
X-ray observations of the gravitationally lensed quasar 0957 + 561 with the Einstein Observatory High Resolution Imager indicate the presence of a new component in the system. The significantly greater X-ray intensity of image A compared with image B and the extended X-ray emission can be interpreted as the gravitational lensing of a quasi-circular X-ray emitting region into a partial Einstein ring. It is suggested that the observed X-ray emission is produced by a strong cooling flow which could arise were 0957 + 561 embedded in a group of cluster galaxies.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 1993
- DOI:
- 10.1086/172720
- Bibcode:
- 1993ApJ...410...21J
- Keywords:
-
- Gravitational Lenses;
- Quasars;
- X Ray Sources;
- Luminosity;
- Proportional Counters;
- Spectral Emission;
- X Ray Astronomy;
- Astrophysics;
- COSMOLOGY: GRAVITATIONAL LENSING;
- GALAXIES: QUASARS: INDIVIDUAL ALPHANUMERIC: 0957;
- 561;
- X-RAYS: GALAXIES