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Cosmological parameters from pre-planck cosmic microwave background measurements

  • Erminia Calabrese
  • , Renée A. Hlozek
  • , Nick Battaglia
  • , Elia S. Battistelli
  • , J. Richard Bond
  • , Jens Chluba
  • , Devin Crichton
  • , Sudeep Das
  • , Mark J. Devlin
  • , Joanna Dunkley
  • , Rolando Dünner
  • , Marzieh Farhang
  • , Megan B. Gralla
  • , Amir Hajian
  • , Mark Halpern
  • , Matthew Hasselfield
  • , Adam D. Hincks
  • , Kent D. Irwin
  • , Arthur Kosowsky
  • , Thibaut Louis
  • Tobias A. Marriage, Kavilan Moodley, Laura Newburgh, Michael D. Niemack, Michael R. Nolta, Lyman A. Page, Neelima Sehgal, Blake D. Sherwin, Jonathan L. Sievers, Cristóbal Sifón, David N. Spergel, Suzanne T. Staggs, Eric R. Switzer, Edward J. Wollack
  • University of Oxford
  • Princeton University
  • Carnegie Mellon University
  • University of Rome La Sapienza
  • University of Toronto
  • Johns Hopkins University
  • Argonne National Laboratory
  • Lawrence Berkeley National Laboratory
  • University of Pennsylvania
  • Pontificia Universidad Católica de Chile
  • University of British Columbia
  • National Institute of Standards and Technology
  • University of Pittsburgh
  • University of KwaZulu-Natal
  • Cornell University
  • Leiden University
  • NASA Goddard Space Flight Center

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Recent data from the WMAP, ACT and SPT experiments provide precise measurements of the cosmic microwave background temperature power spectrum over a wide range of angular scales. The combination of these observations is well fit by the standard, spatially flat ΛCDM cosmological model, constraining six free parameters to within a few percent. The scalar spectral index, n s=0.9690±0.0089, is less than unity at the 3.5σ level, consistent with simple models of inflation. The damping tail of the power spectrum at high resolution, combined with the amplitude of gravitational lensing measured by ACT and SPT, constrains the effective number of relativistic species to be Neff=3.28±0.40, in agreement with the standard model's three species of light neutrinos.

Original languageEnglish
Article number103012
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume87
Issue number10
DOIs
StatePublished - May 20 2013

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