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Geometrical expression for the angular resolution of a network of gravitational-wave detectors

Wen, Linqing and Chen, Yanbei (2010) Geometrical expression for the angular resolution of a network of gravitational-wave detectors. Physical Review D, 81 (8). 082001. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:20100525-113842984

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Abstract

We report for the first time general geometrical expressions for the angular resolution of an arbitrary network of interferometric gravitational-wave (GW) detectors when the arrival time of a GW is unknown. We show explicitly elements that decide the angular resolution of a GW detector network. In particular, we show the dependence of the angular resolution on areas formed by projections of pairs of detectors and how they are weighted by sensitivities of individual detectors. Numerical simulations are used to demonstrate the capabilities of the current GW detector network. We confirm that the angular resolution is poor along the plane formed by current LIGO-Virgo detectors. A factor of a few to more than ten fold improvement of the angular resolution can be achieved if the proposed new GW detectors LCGT or AIGO are added to the network. We also discuss the implications of our results for the design of a GW detector network, optimal localization methods for a given network, and electromagnetic follow-up observations.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.81.082001DOIUNSPECIFIED
http://prd.aps.org/abstract/PRD/v81/i8/e082001PublisherUNSPECIFIED
Additional Information:© 2010 American Physical Society. Received 3 April 2007; revised 1 February 2010; published 8 April 2010. We are grateful to Emanuele Berti, Cole Miller, Antony Searle, Stephen Fairhurst, Reinhard Prix, Ray Frey, David Blair, Sterl Phinney, Andrzej Krolak for useful comments of this work. This work is in part supported by NSF grant PHY-0653653, the David and Barbara Groce start-up fund at Caltech, the Alexander von Humboldt Foundation’s Sofja Kovalevskaja Programme, and by the Australian Research Council.
Group:TAPIR
Funders:
Funding AgencyGrant Number
NSFPHY-0653653
David and Barbara Groce start-up fund at CaltechUNSPECIFIED
Alexander von Humboldt Foundation’s Sofja Kovalevskaja ProgrammeUNSPECIFIED
Australian Research CouncilUNSPECIFIED
Classification Code:PACS:04.80.Nn, 95.75.-z, 97.60.Gb, 97.80.-d
Record Number:CaltechAUTHORS:20100525-113842984
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20100525-113842984
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18429
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:01 Jun 2010 03:44
Last Modified:11 Sep 2014 16:52

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