skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Cosmic discordance: are Planck CMB and CFHTLenS weak lensing measurements out of tune?

Abstract

We examine the level of agreement between low-redshift weak lensing data and the cosmic microwave background using measurements from the Canada–France–Hawaii Telescope Lensing Survey (CFHTLenS) and Planck+Wilkinson Microwave Anisotropy Probe (WMAP) polarization. We perform an independent analysis of the CFHTLenS six bin tomography results of Heymans et al. We extend their systematics treatment and find the cosmological constraints to be relatively robust to the choice of non-linear modelling, extension to the intrinsic alignment model and inclusion of baryons. We find that when marginalized in the Ωm–σ8 plane, the 95 percent confidence contours of CFHTLenS and Planck+WMAP only just touch, but the discrepancy is less significant in the full six-dimensional parameter space of Λ cold dark matter (ΛCDM). Allowing a massive active neutrino or tensor modes does not significantly resolve the tension in the full n-dimensional parameter space. Our results differ from some in the literature because we use the full tomographic information in the weak lensing data and marginalize over systematics. We note that adding a sterile neutrino to ΛCDM brings the 2D marginalized contours into greater overlap, mainly due to the extra effective number of neutrino species, which we find to be 0.88 ± 0.43 (68 per cent) greatermore » than standard on combining the data sets. We discuss why this is not a completely satisfactory resolution, leaving open the possibility of other new physics or observational systematics as contributing factors. We provide updated cosmology fitting functions for the CFHTLenS constraints and discuss the differences from ones used in the literature.« less

Authors:
 [1];  [1];  [2];  [3];  [4]
  1. Univ. of Manchester (United Kingdom). School of Physics and Astronomy, Jodrell Bank Center for Astrophysics
  2. Univ. of Manchester (United Kingdom). School of Physics and Astronomy, Jodrell Bank Center for Astrophysic
  3. Univ. of Pennsylvania, Philadelphia, PA (United States). Center for Particle Cosmology, Dept. of Physics and Astronomy
  4. Stanford Univ., Stanford, CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology; SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; National Science Foundation (NSF); European Research Council (ERC)
OSTI Identifier:
1326997
Report Number(s):
SLAC-PUB-16719
Journal ID: ISSN 0035-8711
Grant/Contract Number:  
AC02-76SF00515; SC0007901; PHYS-1066293
Resource Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 451; Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; gravitational lensing: weak; cosmic background radiation; dark matter; dark energy; cosmology: observations; cosmological parameters

Citation Formats

MacCrann, Niall, Zuntz, Joe, Bridle, Sarah, Jain, Bhuvnesh, and Becker, M. R. Cosmic discordance: are Planck CMB and CFHTLenS weak lensing measurements out of tune?. United States: N. p., 2015. Web. doi:10.1093/mnras/stv1154.
MacCrann, Niall, Zuntz, Joe, Bridle, Sarah, Jain, Bhuvnesh, & Becker, M. R. Cosmic discordance: are Planck CMB and CFHTLenS weak lensing measurements out of tune?. United States. doi:10.1093/mnras/stv1154.
MacCrann, Niall, Zuntz, Joe, Bridle, Sarah, Jain, Bhuvnesh, and Becker, M. R. Wed . "Cosmic discordance: are Planck CMB and CFHTLenS weak lensing measurements out of tune?". United States. doi:10.1093/mnras/stv1154. https://www.osti.gov/servlets/purl/1326997.
@article{osti_1326997,
title = {Cosmic discordance: are Planck CMB and CFHTLenS weak lensing measurements out of tune?},
author = {MacCrann, Niall and Zuntz, Joe and Bridle, Sarah and Jain, Bhuvnesh and Becker, M. R.},
abstractNote = {We examine the level of agreement between low-redshift weak lensing data and the cosmic microwave background using measurements from the Canada–France–Hawaii Telescope Lensing Survey (CFHTLenS) and Planck+Wilkinson Microwave Anisotropy Probe (WMAP) polarization. We perform an independent analysis of the CFHTLenS six bin tomography results of Heymans et al. We extend their systematics treatment and find the cosmological constraints to be relatively robust to the choice of non-linear modelling, extension to the intrinsic alignment model and inclusion of baryons. We find that when marginalized in the Ωm–σ8 plane, the 95 percent confidence contours of CFHTLenS and Planck+WMAP only just touch, but the discrepancy is less significant in the full six-dimensional parameter space of Λ cold dark matter (ΛCDM). Allowing a massive active neutrino or tensor modes does not significantly resolve the tension in the full n-dimensional parameter space. Our results differ from some in the literature because we use the full tomographic information in the weak lensing data and marginalize over systematics. We note that adding a sterile neutrino to ΛCDM brings the 2D marginalized contours into greater overlap, mainly due to the extra effective number of neutrino species, which we find to be 0.88 ± 0.43 (68 per cent) greater than standard on combining the data sets. We discuss why this is not a completely satisfactory resolution, leaving open the possibility of other new physics or observational systematics as contributing factors. We provide updated cosmology fitting functions for the CFHTLenS constraints and discuss the differences from ones used in the literature.},
doi = {10.1093/mnras/stv1154},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 451,
place = {United States},
year = {2015},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 57 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Light sterile neutrinos after BICEP-2
journal, June 2014

  • Archidiacono, Maria; Fornengo, Nicolao; Gariazzo, Stefano
  • Journal of Cosmology and Astroparticle Physics, Vol. 2014, Issue 06
  • DOI: 10.1088/1475-7516/2014/06/031

Detection of weak gravitational lensing by large-scale structure
journal, October 2000

  • Bacon, David J.; Refregier, Alexandre R.; Ellis, Richard S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 318, Issue 2
  • DOI: 10.1046/j.1365-8711.2000.03851.x

Evidence for Massive Neutrinos from Cosmic Microwave Background and Lensing Observations
journal, February 2014


NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: FINAL MAPS AND RESULTS
journal, September 2013

  • Bennett, C. L.; Larson, D.; Weiland, J. L.
  • The Astrophysical Journal Supplement Series, Vol. 208, Issue 2
  • DOI: 10.1088/0067-0049/208/2/20

Review of Particle Physics
journal, July 2012


The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: testing gravity with redshift space distortions using the power spectrum multipoles
journal, July 2014

  • Beutler, Florian; Saito, Shun; Seo, Hee-Jong
  • Monthly Notices of the Royal Astronomical Society, Vol. 443, Issue 2
  • DOI: 10.1093/mnras/stu1051

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: signs of neutrino mass in current cosmological data sets
journal, September 2014

  • Beutler, F.; Saito, S.; Brownstein, J. R.
  • Monthly Notices of the Royal Astronomical Society, Vol. 444, Issue 4
  • DOI: 10.1093/mnras/stu1702

BICEP2. II. Experiment And Three-Year Data Set
journal, August 2014

  • Ade, P. A. R.; Aikin, R. W.; Amiri, M.
  • The Astrophysical Journal, Vol. 792, Issue 1, Article No. 62
  • DOI: 10.1088/0004-637X/792/1/62

Joint Analysis of BICEP2/ Keck Array and Planck Data
journal, March 2015


Cosmological simulations of the growth of supermassive black holes and feedback from active galactic nuclei: method and tests
journal, September 2009


Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements
journal, December 2007


Tomographic weak-lensing shear spectra from large N -body and hydrodynamical simulations
journal, June 2012


Intrinsic and extrinsic galaxy alignment
journal, January 2001


Imprint of gravitational waves on the cosmic microwave background
journal, July 1993

  • Crittenden, Robert; Bond, J. Richard; Davis, Richard L.
  • Physical Review Letters, Vol. 71, Issue 3
  • DOI: 10.1103/PhysRevLett.71.324

Neutrinos help reconcile Planck measurements with both the early and local Universe
journal, October 2014


A new life for sterile neutrinos: resolving inconsistencies using hot dark matter
journal, October 2013


Baryons, neutrinos, feedback and weak gravitational lensing
journal, April 2015

  • Harnois-Déraps, Joachim; van Waerbeke, Ludovic; Viola, Massimo
  • Monthly Notices of the Royal Astronomical Society, Vol. 450, Issue 2
  • DOI: 10.1093/mnras/stv646

The Coyote Universe Extended: Precision Emulation of the Matter Power Spectrum
journal, December 2013


The Shear Testing Programme – I. Weak lensing analysis of simulated ground-based observations
journal, April 2006

  • Heymans, Catherine; Van Waerbeke, Ludovic; Bacon, David
  • Monthly Notices of the Royal Astronomical Society, Vol. 368, Issue 3
  • DOI: 10.1111/j.1365-2966.2006.10198.x

CFHTLenS: the Canada–France–Hawaii Telescope Lensing Survey: CFHTLenS
journal, October 2012

  • Heymans, Catherine; Van Waerbeke, Ludovic; Miller, Lance
  • Monthly Notices of the Royal Astronomical Society, Vol. 427, Issue 1
  • DOI: 10.1111/j.1365-2966.2012.21952.x

CFHTLenS tomographic weak lensing cosmological parameter constraints: Mitigating the impact of intrinsic galaxy alignments
journal, May 2013

  • Heymans, Catherine; Grocutt, Emma; Heavens, Alan
  • Monthly Notices of the Royal Astronomical Society, Vol. 432, Issue 3
  • DOI: 10.1093/mnras/stt601

Detection of thermal SZ-CMB lensing cross-correlation in Planck nominal mission data
journal, February 2014


Intrinsic alignment-lensing interference as a contaminant of cosmic shear
journal, September 2004


The Canadian Cluster Comparison Project: detailed study of systematics and updated weak lensing masses★
journal, March 2015

  • Hoekstra, Henk; Herbonnet, Ricardo; Muzzin, Adam
  • Monthly Notices of the Royal Astronomical Society, Vol. 449, Issue 1
  • DOI: 10.1093/mnras/stv275

CMB power spectrum parameter degeneracies in the era of precision cosmology
journal, April 2012

  • Howlett, Cullan; Lewis, Antony; Hall, Alex
  • Journal of Cosmology and Astroparticle Physics, Vol. 2012, Issue 04
  • DOI: 10.1088/1475-7516/2012/04/027

Systematic errors in future weak-lensing surveys: requirements and prospects for self-calibration
journal, February 2006


COSMIC SHEAR RESULTS FROM THE DEEP LENS SURVEY. I. JOINT CONSTRAINTS ON Ω M AND σ 8 WITH A TWO-DIMENSIONAL ANALYSIS
journal, February 2013

  • Jee, M. James; Tyson, J. Anthony; Schneider, Michael D.
  • The Astrophysical Journal, Vol. 765, Issue 1
  • DOI: 10.1088/0004-637X/765/1/74

The Influence of Baryons on the Clustering of Matter and Weak-Lensing Surveys
journal, March 2006

  • Jing, Y. P.; Zhang, Pengjie; Lin, W. P.
  • The Astrophysical Journal, Vol. 640, Issue 2
  • DOI: 10.1086/503547

CFHTLenS: combined probe cosmological model comparison using 2D weak gravitational lensing
journal, February 2013

  • Kilbinger, Martin; Fu, Liping; Heymans, Catherine
  • Monthly Notices of the Royal Astronomical Society, Vol. 430, Issue 3
  • DOI: 10.1093/mnras/stt041

3D cosmic shear: cosmology from CFHTLenS
journal, June 2014

  • Kitching, T. D.; Heavens, A. F.; Alsing, J.
  • Monthly Notices of the Royal Astronomical Society, Vol. 442, Issue 2
  • DOI: 10.1093/mnras/stu934

No New Cosmological Concordance with Massive Sterile Neutrinos
journal, July 2014


Efficient Computation of Cosmic Microwave Background Anisotropies in Closed Friedmann‐Robertson‐Walker Models
journal, August 2000

  • Lewis, Antony; Challinor, Anthony; Lasenby, Anthony
  • The Astrophysical Journal, Vol. 538, Issue 2
  • DOI: 10.1086/309179

Direct search for mass of neutrino and anomaly in the tritium beta-spectrum
journal, August 1999


Gas expulsion by quasar-driven winds as a solution to the overcooling problem in galaxy groups and clusters: How quasar winds solve overcooling in groups
journal, January 2011


Bayesian galaxy shape measurement for weak lensing surveys – III. Application to the Canada–France–Hawaii Telescope Lensing Survey
journal, January 2013

  • Miller, L.; Heymans, C.; Kitching, T. D.
  • Monthly Notices of the Royal Astronomical Society, Vol. 429, Issue 4
  • DOI: 10.1093/mnras/sts454

The WiggleZ Dark Energy Survey: Final data release and cosmological results
journal, November 2012


Planck 2013 results. I. Overview of products and scientific results
journal, October 2014


Planck 2013 results. XV. CMB power spectra and likelihood
journal, October 2014


Planck 2013 results. XVI. Cosmological parameters
journal, October 2014


Planck 2013 results. XVII. Gravitational lensing by large-scale structure
journal, October 2014


Planck 2013 results. XX. Cosmology from Sunyaev–Zeldovich cluster counts
journal, October 2014


Effects of Baryons and Dissipation on the Matter Power Spectrum
journal, January 2008

  • Rudd, Douglas H.; Zentner, Andrew R.; Kravtsov, Andrey V.
  • The Astrophysical Journal, Vol. 672, Issue 1
  • DOI: 10.1086/523836

The physics driving the cosmic star formation history
journal, March 2010


Quantifying the effect of baryon physics on weak lensing tomography: Baryon physics and weak lensing tomography
journal, September 2011

  • Semboloni, Elisabetta; Hoekstra, Henk; Schaye, Joop
  • Monthly Notices of the Royal Astronomical Society, Vol. 417, Issue 3
  • DOI: 10.1111/j.1365-2966.2011.19385.x

Stable clustering, the halo model and non-linear cosmological power spectra
journal, June 2003


Planck data reconsidered
journal, January 2015


Revising the Halofit Model for the Nonlinear Matter Power Spectrum
journal, December 2012

  • Takahashi, Ryuichi; Sato, Masanori; Nishimichi, Takahiro
  • The Astrophysical Journal, Vol. 761, Issue 2
  • DOI: 10.1088/0004-637X/761/2/152

Separating the early universe from the late universe: Cosmological parameter estimation beyond the black box
journal, November 2002


Applications of Bayesian model selection to cosmological parameters
journal, June 2007


The effects of galaxy formation on the matter power spectrum: a challenge for precision cosmology: Galaxy formation and the matter power spectrum
journal, July 2011


CHANDRA CLUSTER COSMOLOGY PROJECT III: COSMOLOGICAL PARAMETER CONSTRAINTS
journal, February 2009


Robust weak-lensing mass calibration of Planck galaxy clusters
journal, July 2014

  • von der Linden, Anja; Mantz, Adam; Allen, Steven W.
  • Monthly Notices of the Royal Astronomical Society, Vol. 443, Issue 3
  • DOI: 10.1093/mnras/stu1423

High precision measurement of the tritium β spectrum near its endpoint and upper limit on the neutrino mass
journal, August 1999


Baryons and weak lensing power spectra
journal, November 2004


Detection of weak gravitational lensing distortions of distant galaxies by cosmic dark matter at large scales
journal, May 2000

  • Wittman, David M.; Tyson, J. Anthony; Kirkman, David
  • Nature, Vol. 405, Issue 6783
  • DOI: 10.1038/35012001

Effect of Hot Baryons on the Weak-Lensing Shear Power Spectrum
journal, October 2004

  • Zhan, Hu; Knox, Lloyd
  • The Astrophysical Journal, Vol. 616, Issue 2
  • DOI: 10.1086/426712

    Works referencing / citing this record:

    Observational challenges for the standard FLRW model
    journal, March 2016

    • Buchert, Thomas; Coley, Alan A.; Kleinert, Hagen
    • International Journal of Modern Physics D, Vol. 25, Issue 03
    • DOI: 10.1142/s021827181630007x