The triple QSO PG1115 + 08: another probable gravitational lens
Abstract
Recently, Walsh, Carswell and Weymann1 reported the discovery of two objects (0957+56A,B) with identical spectra and separated by 6 arc min. They suggested that a gravitational lens was responsible. The cumulative result of subsequent work on this object (see refs 2-9) corroborates this interpretation. The example of 0957+56A,B and the data presented here suggest a similar phenomenon is involved in the case of PG1115+08.
- Publication:
-
Nature
- Pub Date:
- June 1980
- DOI:
- 10.1038/285641a0
- Bibcode:
- 1980Natur.285..641W
- Keywords:
-
- Astronomical Spectroscopy;
- Gravitational Lenses;
- Quasars;
- Emission Spectra;
- Image Tubes;
- Spectral Line Width;
- Astrophysics