Estimating parameters of coalescing compact binaries with a detector network including LIGO Australia

Details Estimating parameters of coalescing compact binaries with a detector network including LIGO Australia Estimating parameters of coalescing compact binaries with a detector network including LIGO Australia

2011-06-13

arxiv.org/abs/1106.2547v2

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

This paper has been withdrawn by the authors due to very extensive changes from the original version. Please see the paper "Es

Scientific paper

One of the goals of gravitational-wave astronomy is simultaneous detection of gravitational-wave signals from merging compact-object binaries and the electromagnetic transients from these mergers. With the next generation of advanced ground-based gravitational wave detectors under construction, we examine the benefits of the proposed extension of the detector network to include a fourth site in Australia in addition to the network of Hanford, Livingston and Cascina sites. Using Bayesian parameter-estimation analyses of simulated gravitational-wave signals from a range of coalescing-binary locations and orientations, we study the improvement in parameter estimation. We find that an Australian detector can break degeneracies in several parameters; in particular, the localization of the source on the sky is improved by a factor of ~4, with more modest improvements in distance and binary inclination estimates. This enhanced ability to localize sources on the sky will be crucial in any search for electromagnetic counterparts to detected gravitational-wave signals.

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