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Statistics of Quasars Multiply Imaged by Galaxy Clusters

Joseph F. Hennawi·Neal Dalal·Paul Bode
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Abstract

We compute the expected number of quasars multiply imaged by cluster size dark halos for current wide field quasar surveys by carrying out a large ensemble of ray tracing simulations through clusters from a cosmological N-body simulation of the LCDM cosmology. Our calculation predicts ~ 4 quasar lenses with splittings theta > 10" in the SDSS spectroscopic quasar sample, consistent with the recent discovery of the wide separation lens SDSSJ1004+4112 which has theta=14.6". The SDSS faint photometric quasar survey will contain ~12 multiply imaged quasars with splittings theta > 10". Of these, ~ 2 will be lenses with separations theta > 30", and ~ 2 will be at high redshift (z ~ 4).

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Joseph F. Hennawi, Neal Dalal, Paul Bode. 2005-06-08. Statistics of Quasars Multiply Imaged by Galaxy Clusters. https://doi.org/10.1086/509094

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