TY - JOUR
T1 - Testing cosmogonic models with gravitational lensing
AU - Wambsganss, Joachim
AU - Cen, Renyue
AU - Ostriker, Jeremiah P.
AU - Turner, Edwin L.
PY - 1995
Y1 - 1995
N2 - Gravitational lensing provides a strict test of cosmogonic models because it is directly sensitive to mass inhomogeneities. Detailed numerical propagation of light rays through a universe that has a distribution of inhomogeneities derived from the standard CDM (cold dark matter) scenario, with the aid of massive, fully nonlinear computer simulations, was used to test the model. It predicts that more widely split quasar images should have been seen than were actually found. These and other inconsistencies rule out the Cosmic Background Explorer (COBE)-normalized CDM model with density parameter Ω=1 and the Hubble constant (H0)=50 kilometers second-1 megaparsec-1; but variants of this model might be constructed, which could pass the stringent tests provided by strong gravitational lensing.
AB - Gravitational lensing provides a strict test of cosmogonic models because it is directly sensitive to mass inhomogeneities. Detailed numerical propagation of light rays through a universe that has a distribution of inhomogeneities derived from the standard CDM (cold dark matter) scenario, with the aid of massive, fully nonlinear computer simulations, was used to test the model. It predicts that more widely split quasar images should have been seen than were actually found. These and other inconsistencies rule out the Cosmic Background Explorer (COBE)-normalized CDM model with density parameter Ω=1 and the Hubble constant (H0)=50 kilometers second-1 megaparsec-1; but variants of this model might be constructed, which could pass the stringent tests provided by strong gravitational lensing.
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U2 - 10.1126/science.268.5208.274
DO - 10.1126/science.268.5208.274
M3 - Article
C2 - 17814792
AN - SCOPUS:0000310350
SN - 0036-8075
VL - 268
SP - 274
EP - 276
JO - Science
JF - Science
IS - 5208
ER -