VIRGO sensitivity to binary coalescences and the Population III black hole binaries
Abstract
Aims.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 (∼ 100{}1000 M_⊙), some of them bound in binary systems. The coalescence of such binaries due to emission of gravitational waves may be currently observable.
Methods: .We use a binary population synthesis to model the evolution of Population III binaries.
Results: . 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.
 Publication:

Astronomy and Astrophysics
 Pub Date:
 December 2006
 DOI:
 10.1051/00046361:20065080
 arXiv:
 arXiv:astroph/0602533
 Bibcode:
 2006A&A...459.1001K
 Keywords:

 gravitationals waves;
 stars: binaries: general;
 Astrophysics
 EPrint:
 sumbitted to A&