0957 + 561 A, B: twin quasistellar objects or gravitational lens?
NaturePublished 31 May 1979
Danielle Walsh, R. F. Carswell, R. J. Weymann
Citations980
SJR quartileQ1
SJR score18.29
SNIP10.16
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TL;DR
Difficulties arise in describing these two QSOs as two distinct objects and the possibility that they are two images of the same object formed by a gravitational lens is discussed.
Abstract
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.
Keywords
Physics and Astronomy
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