Testing Cosmogonic Models with Gravitational Lensing

Details Testing Cosmogonic Models with Gravitational Lensing Testing Cosmogonic Models with Gravitational Lensing

1994-09-16

arxiv.org/abs/astro-ph/9409046v1

AIP Conf.Proc.336:347,1995

Astronomy and Astrophysics

Astrophysics

7p postscript file, submitted to Nature, local report#940916

Scientific paper

10.1111/j.1749-6632.1995.tb17609

Gravitational lensing provides a strict test of cosmogonic models. Detailed numerical propagation of light rays through a universe having a distribution of inhomogeneities derived from the standard CDM (cold dark matter) scenario with the aid of massive, fully nonlinear computer simulations is used to test the model. It predicts that we should have seen far more widely split quasar images than have been found. These and other inconsistencies rule out the COBE normalized CDM model with $\Omega=1$ and $H_0=50$km/s/Mpc; but variants of this model might be constructed, which could pass the stringent tests provided by strong gravitational lensing.

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