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Gravitational lensing effects in a modified general relativity model

2001
8 pages
Published in:
  • Astrophys.Space Sci. 278 (2001) 383-390,
  • Astrophys.Space Sci. 278 (2001) 385-385
DOI:
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Abstract: (Springer)
We investigate the effects of gravitational lensing in a modified generalrelativity flat cosmological model. We show that the predicted lensingprobability for low matter densities is larger than in the Einstein-deSitter model but considerably less than in constant-Λ models. Wealso find that the optical depth at low density rises with the sourcered-shift more slowly than in constant-Λ models and that the lensdistribution peaks at lower values of the lens red-shift.