0957 + 561 A, B: twin quasistellar objects or gravitational lens?
@article{Walsh197909575, title={0957 + 561 A, B: twin quasistellar objects or gravitational lens?}, author={D. Walsh and R. Carswell and R. J. Weymann}, journal={Nature}, year={1979}, volume={279}, pages={381-384} }
0957 + 561 A, B are two QSOs of mag 17 with 5.7 arc s separation at redshift 1.405. Their spectra leave little doubt that they are associated. Difficulties arise in describing them as two distinct objects and the possibility that they are two images of the same object formed by a gravitational lens is discussed.
Paper Mentions
Blog Post
News Article
Blog Post
660 Citations
Direct imaging of the twin QSOs 0957 + 561 A and B: the gravitational lens interpretation
- Physics
- Nature
- 1979
- 2
Flux variations of QSO 0957 + 561 A, B and image splitting by stars near the light path
- Physics
- Nature
- 1979
- 288
The Double Quasar 0957+561: Examination of the Gravitational Lens Hypothesis Using the Very Large Array
- Physics, Medicine
- Science
- 1980
- 17
References
SHOWING 1-3 OF 3 REFERENCES