Article

Weighing the giants – IV. Cosmology and neutrino mass

A. MantzKavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USAAnja von der LindenDepartment of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USAS. W. AllenDepartment of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USADouglas ApplegatePatrick L. KellyDepartment of Astronomy, University of California, Berkeley, CA 94720, USAR. Glenn MorrisSLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USADavid RapettiDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, DenmarkRobert W. SchmidtAstronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstrasse 12-14, D-69120 Heidelberg, GermanySaroj AdhikariInstitute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA 16802, USAMark T. AllenKavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USAP. R. BurchatDepartment of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USAD. L. BurkeSLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USAMatteo CataneoDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, DenmarkD. DonovanInstitute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USAH. EbelingInstitute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USASarah ShanderaInstitute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA 16802, USAA. C. D. WrightKavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USA

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Abstract

We employ robust weak gravitational lensing measurements to improve cosmological constraints from measurements of the galaxy cluster mass function and its evolution, using X-ray selected clusters detected in the ROSAT All-Sky Survey. Our lensing analysis constrains the absolute mass scale of such clusters at the 8 per cent level, including both statistical and systematic uncertainties. Combining it with the survey data and X-ray follow-up observations, we find a tight constraint on a combination of the mean matter density and late-time normalization of the matter power spec-trum, σ8(Ωm/0.3) 0.17 = 0.81 ± 0.03, with marginalized, one-dimensional constraints of Ωm = 0.26 ± 0.03 and σ8 = 0.83 ± 0.04. For these two parameters, this represents a factor of two improvement in precision with respect to previous work, primarily due

Identifiers

DOI: 10.1093/mnras/stu2096

Citations and references

Cited by 30 references

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