Authors
S Bocquet, JP Dietrich, T Schrabback, LE Bleem, M Klein, SW Allen, DE Applegate, MLN Ashby, M Bautz, M Bayliss, BA Benson, M Brodwin, E Bulbul, REA Canning, R Capasso, JE Carlstrom, CL Chang, I Chiu, HM Cho, A Clocchiatti, TM Crawford, AT Crites, T De Haan, S Desai, MA Dobbs, RJ Foley, WR Forman, GP Garmire, EM George, MD Gladders, AH Gonzalez, S Grandis, N Gupta, NW Halverson, J Hlavacek-Larrondo, H Hoekstra, GP Holder, WL Holzapfel, Z Hou, JD Hrubes, N Huang, C Jones, G Khullar, L Knox, R Kraft, AT Lee, A Von Der Linden, D Luong-Van, A Mantz, DP Marrone, M McDonald, JJ McMahon, SS Meyer, LM Mocanu, JJ Mohr, RG Morris, S Padin, S Patil, C Pryke, D Rapetti, CL Reichardt, A Rest, JE Ruhl, BR Saliwanchik, A Saro, JT Sayre, KK Schaffer, E Shirokoff, B Stalder, SA Stanford, Z Staniszewski, AA Stark, KT Story, V Strazzullo, CW Stubbs, K Vanderlinde, JD Vieira, A Vikhlinin, R Williamson, A Zenteno
Publication date
2019/6/13
Journal
The Astrophysical Journal
Volume
878
Issue
1
Pages
55
Publisher
IOP Publishing
Description
We derive cosmological constraints using a galaxy cluster sample selected from the 2500 deg 2 SPT-SZ survey. The sample spans the redshift range 0.25< z< 1.75 and contains 343 clusters with SZ detection significance ξ> 5. The sample is supplemented with optical weak gravitational lensing measurements of 32 clusters with 0.29< z< 1.13 (from Magellan and Hubble Space Telescope) and X-ray measurements of 89 clusters with 0.25< z< 1.75 (from Chandra). We rely on minimal modeling assumptions:(i) weak lensing provides an accurate means of measuring halo masses,(ii) the mean SZ and X-ray observables are related to the true halo mass through power-law relations in mass and dimensionless Hubble parameter E (z) with a priori unknown parameters, and (iii) there is (correlated, lognormal) intrinsic scatter and measurement noise relating these observables to their mean relations. We simultaneously fit …
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