Constraining the expansion history of the universe from the red shift evolution of cosmic shear

Daniel Levy, Ram Brustein

Research output: Contribution to journalArticlepeer-review

Abstract

We present a quantitative analysis of the constraints on the total equation of state parameter that can be obtained from measuring the red shift evolution of the cosmic shear. We compare the constraints that can be obtained from measurements of the spin two angular multipole moments of the cosmic shear to those resulting from the two dimensional and three dimensional power spectra of the cosmic shear. We find that if the multipole moments of the cosmic shear are measured accurately enough for a few red shifts the constraints on the dark energy equation of state parameter improve significantly compared to those that can be obtained from other measurements.

Original languageEnglish
Article number003
JournalJournal of Cosmology and Astroparticle Physics
Volume2010
Issue number9
DOIs
StatePublished - 1 Sep 2010

Keywords

  • Dark energy experiments
  • Dark energy theory
  • Weak gravitational lensing

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