Bartlett, J. G.
Evrard, A. E.
AffiliationUniv Arizona, Dept Phys
MetadataShow full item record
PublisherEDP SCIENCES S A
CitationCalibrating the Planck cluster mass scale with CLASH 2017, 604:A89 Astronomy & Astrophysics
JournalAstronomy & Astrophysics
Rights© ESO, 2017.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractWe determine the mass scale of Planck galaxy clusters using gravitational lensing mass measurements from the Cluster Lensing And Supernova survey with Hubble (CLASH). We have compared the lensing masses to the Planck Sunyaev-Zeldovich (SZ) mass proxy for 21 clusters in common, employing a Bayesian analysis to simultaneously fit an idealized CLASH selection function and the distribution between the measured observables and true cluster mass. We used a tiered analysis strategy to explicitly demonstrate the importance of priors on weak lensing mass accuracy. In the case of an assumed constant bias, b(SZ), between true cluster mass, M-500, and the Planck mass proxy, M-PL, our analysis constrains 1 - b(SZ) = 0.73 +/- 0.10 when moderate priors on weak lensing accuracy are used, including a zero-mean Gaussian with standard deviation of 8% to account for possible bias in lensing mass estimations. Our analysis explicitly accounts for possible selection bias effects in this calibration sourced by the CLASH selection function. Our constraint on the cluster mass scale is consistent with recent results from the Weighing the Giants program and the Canadian Cluster Comparison Project. It is also consistent, at 1.34 sigma, with the value needed to reconcile the Planck SZ cluster counts with Planck's base Lambda CDM model fit to the primary cosmic microwave background anisotropies.
NoteOpen access journal.
VersionFinal published version
SponsorsNational Council for Scientific and Technological Development - Brazil (CNPq) [202131/2014-9]; National Council for Scientific and Technological Development - Brazil (PCI/MCTIC/CBPF program); DOE [DE-SC0015975]; Sloan Foundation [FG-2016-6443]; European Unions ; National Aeronautics and Space Administration