Beyond Concordance Cosmology with Magnification of Gravitational-Wave Standard Sirens

Stefano Camera and Atsushi Nishizawa
Phys. Rev. Lett. 110, 151103 – Published 8 April 2013

Abstract

We show how future gravitational-wave detectors would be able to discriminate between the concordance Λ cold dark matter cosmological model and up-to-date competing alternatives, e.g., dynamical dark energy (DE) models or modified gravity (MG) theories. Our method consists of using the weak-lensing magnification effect that affects a standard-siren signal because of its traveling through the Universe’s large scale structure. As a demonstration, we present constraints on DE and MG from proposed gravitational-wave detectors, namely Einstein Telescope and DECI-Hertz Interferometer Gravitational-Wave Observatory and Big-Bang Observer.

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  • Received 19 October 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.151103

© 2013 American Physical Society

Authors & Affiliations

Stefano Camera1,* and Atsushi Nishizawa2,†

  • 1CENTRA, Instituto Superior Técnico, Universidade Técnica de Lisboa, Avenida Rovisco Pais 1, 1049-001 Lisboa, Portugal
  • 2Yukawa Institute for Theoretical Physics, University of Kyoto, Kyoto 606-8502, Japan

  • *stefano.camera@ist.utl.pt
  • nishizawa@tap.scphys.kyoto-u.ac.jp

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Vol. 110, Iss. 15 — 12 April 2013

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