Halo Occupation Distribution of Infrared Selected Quasars
  We perform a Halo Occupation Distribution (HOD) modeling of the projected
two-point correlation function (2PCF) of quasars that are observed in the
Wide-field Infrared Survey Explorer (WISE) telescope with counter-parts in the
Sloan Digital Sky Survey (SDSS) Data Release (DR)-8 quasar catalog at a median
redshift of $z\sim 1.04 (\pm 0.58)$. Using a four parameter HOD model we derive
the host mass scales of WISE selected quasars. Our results show that the median
halo masses of central and satellite quasars lie in the range $M_{\mathrm{cen}}
= (5 \pm 1.0) \times 10^{12} M_{\odot}$ and $M_{\mathrm{sat}} = 8 (^{+7.8}
_{-4.8}) \times 10^{13} M_{\odot}$, respectively. The derived satellite
fraction is $f_{\mathrm{sat}}= 5.5 (^{+35} _{-5.0})\times 10^{-3}$. Previously
Richardson et al.\ used the SDSS DR7 quasar clustering data to obtain the halo
mass distributions of $z\sim 1.4$ quasars. Our results on the HOD of central
quasars are in excellent agreement with Richardson et al.\ but the host mass
scale of satellite quasars for the WISE sample, is lower than that of
Richardson et al.\ resulting in an order of magnitude higher satellite fraction
for the WISE sample. We note that our sample of quasars are systematically
brighter in the WISE frequency bands compared to the full quasar sample of
SDSS. We discuss the implication of this result in the context of current
theories of galaxy evolution.
