Planck Sunyaev–Zel'dovich cluster mass calibration using Hyper Suprime-Cam weak lensing. (8th December 2017)

• Record Type: Journal Article
• Authors: Medezinski, Elinor; Battaglia, Nicholas; Umetsu, Keiichi; Oguri, Masamune; Miyatake, Hironao; Nishizawa, Atsushi J; Sifón, Cristóbal; Spergel, David N; Chiu, I-Non; Lin, Yen-Ting; Bahcall, Neta; Komiyama, Yutaka
• Is Part Of: Publications of the Astronomical Society of Japan. Volume 70:Number SP1(2018)
• Publication Date: 2017-12-08
• Subjects: cosmology: observations -- dark matter -- galaxies: clusters: general -- gravitational lensing: weak -- large-scale structure of universe; Astronomy -- Periodicals; 520.5
• DOI: 10.1093/pasj/psx128
• Languages: English
• ISSNs: 0004-6264

Abstract

Abstract: Using ∼140 deg 2 Subaru Hyper Suprime-Cam (HSC) survey data, we stack the weak lensing (WL) signal around five Planck clusters found within the footprint. This yields a 15σ detection of the mean Planck cluster mass density profile. The five Planck clusters span a relatively wide mass range, M WL, 500c = (2–30) × 10 14 M ⊙ with a mean mass of M WL, 500c = (4.15 ± 0.61) × 10 14 M ⊙ . The ratio of the stacked Planck Sunyaev–Zel'dovich (SZ) mass to the stacked WL mass is 〈 M SZ 〉/〈 M WL 〉 = 1 − b = 0.80 ± 0.14. This mass bias is consistent with previous WL mass calibrations of Planck clusters within the errors. We discuss the implications of our findings for the calibration of SZ cluster counts and the much discussed tension between Planck SZ cluster counts and Planck ΛCDM cosmology.