SIMBAD references

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 ΛCDM cosmology, with power spectrum normalization σ₈=0.95. Our calculation predicts ∼4 quasar lenses with splittings θ>10'' in the SDSS spectroscopic quasar sample, consistent with the recent discovery of the wide separation lens SDSS J1004+4112, which has θ=14.6''. The SDSS faint photometric quasar survey will contain ∼12 multiply imaged quasars with splittings θ>10''. Of these, ∼2 will be lenses with θ>30'', and ∼2 will be at high redshift (z_s∼4).