Digging deeper: Observing primordial gravitational waves below the binary black hole produced stochastic background

2016/11/30 by T. Regimbau, M. Evans, N. Christensen +3 · 1 citation
Physics and Astronomy · #astro-ph.CO #gr-qc

paper · pdf · doi:10.1103/physrevlett.118.151105

published as Phys. Rev. Lett. 118, 151105 (2017) · accepted for publication in PRL (7 pages, 4 figures)

arxiv created 2017/02/28 · arxiv updated 2017/04/19

Abstract

The merger rate of black hole binaries inferred from the detections in the first Advanced LIGO science run, implies that a stochastic background produced by a cosmological population of mergers will likely mask the primordial gravitational-wave background. Here we demonstrate that the next generation of ground-based detectors, such as the Einstein Telescope and Cosmic Explorer, will be able to observe binary black hole mergers throughout the universe with sufficient efficiency that the confusion background can potentially be subtracted to observe the primordial background at the level of Ω_GW ≃ 10^-13 after five years of observation.

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• A "Neutrino Fog" For Gravitational Waves: The Stochastic Gravitational Wave Background from Supernova Neutrino Memory

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