VIRGO sensitivity to binary coalescences and the Population III black hole binaries

Abstract

We analyze the properties of VIRGO detector with the aim of studying its ability to search for coalescing black hole binaries. We focus on the remnants of the Population III stars, which currently should be massive black holes ($\sim 100-1000M_{\odot }$), some of them bound in binary systems. The coalescence of such binaries due to emission of gravitational waves may be currently observable. We use a binary population synthesis to model the evolution of Population III binaries. We calculate the signal to noise ratios of gravitational waves emitted by the system in each of the coalescence phase: inspiral, merger and ringdown, and provide simple formulae for the signal to noise ratio as a function of masses of the binaries. We estimate the detection rates for the VIRGO interferometer and also compare them with the estimates for the current LIGO. We show that these expected rates are similar to, or larger than the expected rates from coalescences of Population I and II compact object binaries.

arXiv commentsumbitted to A&A

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Cited by in corpus (10)

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• Gravitational Waves from the Remnants of the First Stars
• Binary compact object coalescence rates: The role of elliptical galaxies
• On the likelihood of detecting gravitational waves from Population III compact object binaries
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