Skip to main navigation Skip to search Skip to main content

First measurement of the cross-correlation of CMB lensing and galaxy lensing

  • Nick Hand
  • , Alexie Leauthaud
  • , Sudeep Das
  • , Blake D. Sherwin
  • , Graeme E. Addison
  • , J. Richard Bond
  • , Erminia Calabrese
  • , Aldée Charbonnier
  • , Mark J. Devlin
  • , Joanna Dunkley
  • , Thomas Erben
  • , Amir Hajian
  • , Mark Halpern
  • , Joachim Harnois-Déraps
  • , Catherine Heymans
  • , Hendrik Hildebrandt
  • , Adam D. Hincks
  • , Jean Paul Kneib
  • , Arthur Kosowsky
  • , Martin Makler
  • Lance Miller, Kavilan Moodley, Bruno Moraes, Michael D. Niemack, Lyman A. Page, Bruce Partridge, Neelima Sehgal, Huanyuan Shan, Jonathan L. Sievers, David N. Spergel, Suzanne T. Staggs, Eric R. Switzer, James E. Taylor, Ludovic Van Waerbeke, Charlotte Welker, Edward J. Wollack
  • University of California at Berkeley
  • The University of Tokyo
  • Argonne National Laboratory
  • University of British Columbia
  • University of Toronto
  • University of Oxford
  • Universidade Federal do Rio de Janeiro
  • Centro Brasileiro de Pesquisas Físicas
  • University of Pennsylvania
  • University of Bonn
  • University of Edinburgh
  • Swiss Federal Institute of Technology Lausanne
  • LAM
  • University of Pittsburgh
  • University of KwaZulu-Natal
  • University College London
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
  • Cornell University
  • Princeton University
  • Haverford College
  • NASA Goddard Space Flight Center
  • University of Waterloo
  • Institut d'Astrophysique de Paris
  • Sorbonne Université

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

We measure the cross-correlation of cosmic microwave background (CMB) lensing convergence maps derived from Atacama Cosmology Telescope data with galaxy lensing convergence maps as measured by the Canada-France-Hawaii Telescope Stripe 82 Survey. The CMB-galaxy lensing cross power spectrum is measured for the first time with a significance of 4.2σ, which corresponds to a 12% constraint on the amplitude of density fluctuations at redshifts ∼0.9. With upcoming improved lensing data, this novel type of measurement will become a powerful cosmological probe, providing a precise measurement of the mass distribution at intermediate redshifts and serving as a calibrator for systematic biases in weak lensing measurements.

Original languageEnglish
Article number062001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number6
DOIs
StatePublished - Mar 2 2015

Fingerprint

Dive into the research topics of 'First measurement of the cross-correlation of CMB lensing and galaxy lensing'. Together they form a unique fingerprint.

Cite this