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MG2016+112: A Double Gravitational Lens Model

Published online by Cambridge University Press:  25 May 2016

S. Nair  and
M. A. Garrett
S. Nair
Affiliation:
University of Manchester, NRAL, Jodrell Bank, U.K.
M. A. Garrett
Affiliation:
University of Manchester, NRAL, Jodrell Bank, U.K.

Extract

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MG2016+112, discovered by Lawrence et al. (1984) is one of the best–studied among multiply–imaged systems, but is still only partially understood. Ostensibly a three–image system consisting of images A, B and C of a quasar at z = 3.273, the observed lensing galaxy D (a giant elliptical at z = 1.01) at the centroid of the image system seems inadequate to provide the minimum mass of ∼ 2.5 × 1012 M⊙ within 10 kpc of its center (in projection along the l.o.s.) required to produce the observed 3.″9 image–splitting. C itself appears to consist of two components, radio emission that may be associated with the faint optical image counterpart of A and B (called C2, see Garrett et al. 1994) and flat-spectrum C1, which dominates radio observations of the system and apparently consists of at least three linearly stretched subcomponents, C11 to C13 (see Garrett et al. in these proceedings).

Type
Chapter 6: Galaxies
Information
Symposium - International Astronomical Union , Volume 173: Astrophysical Applications of Gravitational Lensing , 1996 , pp. 195 - 196
Copyright
Copyright © Kluwer 1996 

References

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