Host Dark Matter Halos of SDSS Red and Blue Quasars: No Significant Difference in Large-scale Environment

The observed optical colors of quasars are generally interpreted in one two frameworks: unified models which attribute color to random orientation the accretion disk along line-of-sight, and evolutionary invoke connections between quasar systems their environments. We test these schema by probing dark matter halo environments optically-selected as a function $g-i$ measuring two-point correlation functions $\sim$ 0.34 million eBOSS well gravitational deflection cosmic microwave background photons around 0.66 XDQSO photometric candidates. do not detect trend bias with through either analysis, finding that at $0.8 < z 2.2$ occupy halos characteristic mass $M_{h}\sim 3\times 10^{12} \ h^{-1} M_{\odot}$ regardless color. This result implies quasar's large-scale environment is strongly connected its also confirm findings fundamental differences radio properties red blue stacking 1.4 GHz FIRST images positions, suggesting cannot be attributed orientation. Instead, likely arise on nuclear-galactic scales, perhaps owing reddening nuclear dusty wind. Finally, we show quasars' independent $r-W2$ optical-infrared colors, while previous work has suggested mid-infrared-selected obscured more massive halos. discuss implications this for galaxy co-evolution.