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Date and Time of the Query: 2019-07-15 T15:28:34 PDT
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For refcode 2016ApJ...832...26S:
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2016ApJ...832...26S A Comparison and Joint Analysis of Sunyaev-Zel'dovich Effect Measurements from Planck and Bolocam for a Set of 47 Massive Galaxy Clusters Sayers, Jack; Golwala, Sunil R.; Mantz, Adam B.; Merten, Julian; Molnar, Sandor M.; Naka, Michael; Pailet, Gregory; Pierpaoli, Elena; Siegel, Seth R.; Wolman, Ben Abstract. We measure the Sunyaev-Zel'dovich (SZ) signal toward a set of 47 clusters with a median mass of 9.5 x 10^14^ M_sun_ and a median redshift of 0.40 using data from Planck and the ground-based Bolocam receiver. When Planck XMM-like masses are used to set the scale radius {theta}_{{s_}}, we find consistency between the integrated SZ signal, {Y}_5{{R_}500}, derived from Bolocam and Planck based on generalized Navarro, Frenk, and White model fits using A10 shape parameters, with an average ratio of 1.069 +/- 0.030 (allowing for the ~=5% Bolocam flux calibration uncertainty). We also perform a joint fit to the Bolocam and Planck data using a modified A10 model with the outer logarithmic slope beta allowed to vary, finding beta = 6.13 +/- 0.16 +/- 0.76 (measurement error followed by intrinsic scatter). In addition, we find that the value of beta scales with mass and redshift according to beta is proportional to {M}^0.077+/- 0.026^x {(1+z)}^-0.06+/- 0.09^. This mass scaling is in good agreement with recent simulations. We do not observe the strong trend of beta with redshift seen in simulations, though we conclude that this is most likely due to our sample selection. Finally, we use Bolocam measurements of Y_500_ to test the accuracy of the Planck completeness estimate. We find consistency, with the actual number of Planck detections falling approximately 1sigma below the expectation from Bolocam. We translate this small difference into a constraint on the effective mass bias for the Planck cluster cosmology results, with (1-b)=0.93+/- 0.06. Key words: catalogs, cosmology: observations, galaxies: clusters: intracluster medium
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