Planck Sunyaev–Zel’dovich cluster mass calibration using Hyper Suprime-Cam weak lensing

PASJ: Publications of the Astronomical Society of Japan

Komiyama, Yutaka¹  Battaglia, Nicholas²  Lin, Yen-Ting²  Medezinski, Elinor²  Bahcall, Neta²  Nishizawa, Atsushi J³  Chiu, I-Non⁴  Umetsu, Keiichi⁵  Spergel, David N⁶  Sifón, Cristóbal⁷  Oguri, Masamune⁷  Miyatake, Hironao⁸ 

[1] Center for Computational Astrophysics, Flatiron Institute, 162 5th Ave. New York, NY 10010, USA;Department of Astrophysical Sciences, Princeton University, 4 Ivy Ln, Princeton, NJ 08544, USA;Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan;Institute of Astronomy and Astrophysics, Academia Sinica, P. O. Box 23-141, Taipei 10617, Taiwan;Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA;Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), Tokyo Institutes for Advanced Study, The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8582, Japan;Research Center for the Early Universe, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

关键词: galaxies: clusters: general;    cosmology: observations;    (cosmology:) dark matter;    (cosmology:) large-scale structure of universe;    gravitational lensing: weak;   

DOI  :  10.1093/pasj/psx128

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

Using ∼140 deg2 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, MWL,500c = (2–30) × 1014 M⊙with a mean mass of MWL,500c = (4.15 ± 0.61) × 1014 M⊙ . The ratio of the stacked Planck Sunyaev–Zel’dovich (SZ) mass to the stacked WL mass is 〈MSZ〉/〈MWL〉 = 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.

【 授权许可】

CC BY