A new case of gravitational lensing

Details A new case of gravitational lensing A new case of gravitational lensing

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.329..695s&link_type=abstract

Nature (ISSN 0028-0836), vol. 329, Oct. 22, 1987, p. 695, 696.

Physics

78

Gravitational Lenses, Quasars, Galaxies, Spectrum Analysis

Scientific paper

The authors have begun a systematic search from ESO for gravitational lens systems in a selected sample of highly luminous quasars; MV < -29.0. They give a brief description of their first identified gravitational lens system UM673 = Q0142-100 = PHL3703. It consists of two images, A (mR = 16.9) and B (mR = 19.1), separated by 2.2 arc s at a redshift zq = 2.719. The lensing galaxy (mR ≈ 19, ZL ≈ 0.49) has also been found. It lies very near the line connecting the two QSO images, ≡0.8 arc s from the fainter one. A value M0 ≈ 2.4×1011M_sun; for the mass of the lensing galaxy and Δt ≈ 7 weeks for most likely travel-time difference between the two light paths to the QSO are found (assuming H0 = 75 km s-1Mpc-1, q0 = 0).

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