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        Weighing obscured and unobscured quasar hosts with the cosmic microwave background

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        Author
        DiPompeo, M.A.
        Myers, A. D.
        Hickox, R. C.
        Geach, James
        Holder, G.
        Hainline, K.N.
        Hall, S.W.
        Attention
        2299/16780
        Abstract
        We cross-correlate a cosmic microwave background (CMB) lensing map with the projected space densities of quasars to measure the bias and halo masses of a quasar sample split into obscured and unobscured populations, the first application of this method to distinct quasar subclasses. Several recent studies of the angular clustering of obscured quasars have shown that these objects likely reside in higher mass haloes compared to their unobscured counterparts. This has important implications for models of the structure and geometry of quasars, their role in growing supermassive black holes, and mutual quasar/host galaxy evolution. However, the magnitude and significance of this difference has varied from study to study. Using data from Planck, WISE, and Sloan Digital Sky Survey, we follow up on these results using the independent method of CMB lensing cross-correlations
        Publication date
        2015-02
        Published in
        Monthly Notices of the Royal Astronomical Society
        Published version
        https://doi.org/10.1093/mnras/stu2341
        Other links
        http://hdl.handle.net/2299/16780
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