Neutrino Mass and Dark Energy from Weak Lensing

Kevork N. Abazajian and Scott Dodelson
Phys. Rev. Lett. 91, 041301 – Published 24 July 2003

Abstract

Weak gravitational lensing of background galaxies by intervening matter directly probes the mass distribution in the Universe. This distribution is sensitive to both the dark energy and neutrino mass. We examine the potential of lensing experiments to measure features of both simultaneously. Focusing on the radial information contained in a future deep 4000deg2 survey, we find that the expected (1σ) error on a neutrino mass is 0.1 eV, if the dark-energy parameters are allowed to vary. The constraints on dark-energy parameters are similarly restrictive, with errors on w of 0.09.

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  • Received 11 December 2002

DOI:https://doi.org/10.1103/PhysRevLett.91.041301

©2003 American Physical Society

Authors & Affiliations

Kevork N. Abazajian1 and Scott Dodelson1,2

  • 1NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500, USA
  • 2Department of Astronomy & Astrophysics, The University of Chicago, Chicago, Illinois 60637-1433, USA

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Issue

Vol. 91, Iss. 4 — 25 July 2003

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