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Localizing Compact Binary Inspirals on the Sky Using Ground-based Gravitational Wave Interferometers

Nissanke, Samaya and Sievers, Jonathan and Dalal, Neal and Holz, Daniel (2011) Localizing Compact Binary Inspirals on the Sky Using Ground-based Gravitational Wave Interferometers. Astrophysical Journal, 739 (2). Art. No. 99. ISSN 0004-637X.

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The inspirals and mergers of compact binaries are among the most promising events for ground-based gravitational-wave (GW) observatories. The detection of electromagnetic (EM) signals from these sources would provide complementary information to the GW signal. It is therefore important to determine the ability of GW detectors to localize compact binaries on the sky, so that they can be matched to their EM counterparts. We use Markov Chain Monte Carlo techniques to study sky localization using networks of ground-based interferometers. Using a coherent-network analysis, we find that the Laser Interferometer Gravitational Wave Observatory (LIGO)-Virgo network can localize 50% of their detected neutron star binaries to better than 50 deg^2 with a 95% confidence interval. The addition of the Large Scale Cryogenic Gravitational Wave Telescope (LCGT) and LIGO-Australia improves this to 12 deg^2. Using a more conservative coincident detection threshold, we find that 50% of detected neutron star binaries are localized to 13 deg2 using the LIGO-Virgo network, and to 3 deg^2 using the LIGO-Virgo-LCGT-LIGO-Australia network. Our findings suggest that the coordination of GW observatories and EM facilities offers great promise.

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Sievers, Jonathan0000-0001-6903-5074
Additional Information:© 2011 American Astronomical Society. Received 2011 May 16; accepted 2011 July 7; published 2011 September 15. We are grateful to Josh Bloom, Scott Hughes, Sterl Phinney, Bangalore Sathyaprakash, and Michele Vallisneri for suggestions in the early development of the work. We thank Chad Galley, Mansi Kasliwal, Ilya Mandel, and Eran Ofek for careful reading of the manuscript, and Yanbei Chen, Curt Cutler, Wen-Fai Fong, Chris Hirata, Tom Prince, Bernard Schutz, Kip Thorne, Linqing Wen, and Stan Whitcomb for helpful discussions. Simulations were performed using the Sunnyvale cluster at CITA, which is funded by NSERC and CIAR. S.M.N.’s research was carried out at the Jet Propulsion Laboratory, California Institute of Technology under a contract with National Aeronautics and Space Administration.
Subject Keywords:gamma-ray burst: general; gravitational waves; stars: neutron; surveys
Issue or Number:2
Classification Code:PACS: 95.30.Sf; 97.80.-d; 97.60.Jd; 97.10.Ld;02.50.Ng
Record Number:CaltechAUTHORS:20111010-101452162
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Official Citation:Localizing Compact Binary Inspirals on the Sky Using Ground-based Gravitational Wave Interferometers Samaya Nissanke et al. 2011 ApJ 739 99
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27139
Deposited By: Jason Perez
Deposited On:10 Oct 2011 20:08
Last Modified:09 Mar 2020 13:19

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