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Strong-lensing of Gravitational Waves by Galaxy Clusters

Published online by Cambridge University Press:  29 January 2019

Graham P. Smith ,
Christopher Berry ,
Matteo Bianconi ,
Will M. Farr ,
Mathilde Jauzac ,
Richard Massey ,
Johan Richard ,
Andrew Robertson ,
Keren Sharon  and
Alberto Vecchio
...Show all authors
Graham P. Smith
Affiliation:
School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, England Email: gps@star.sr.bham.ac.uk
Christopher Berry
Affiliation:
School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, England Birmingham Institute of Gravitational Wave Astronomy, University of Birmingham, Birmingham, B15 2TT, England
Matteo Bianconi
Affiliation:
School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, England
Will M. Farr
Affiliation:
School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, England Birmingham Institute of Gravitational Wave Astronomy, University of Birmingham, Birmingham, B15 2TT, England
Mathilde Jauzac
Affiliation:
Centre for Extragalactic Astronomy, Department of Physics, Durham University, Durham DH1 3LE, England Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, England Astrophysics and Cosmology Research Unit, School of Mathematical Sciences, University of KwaZulu-Natal, Durban 4041, South Africa Laboratoire d’Astrophysique École Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny CH-1290 Versoix, Switzerland
Richard Massey
Affiliation:
Centre for Extragalactic Astronomy, Department of Physics, Durham University, Durham DH1 3LE, England
Johan Richard
Affiliation:
CRAL, Observatoire de Lyon, Université Lyon 1, 9 Avenue Ch. André, 69561 Saint Genis Laval Cedex, France
Andrew Robertson
Affiliation:
Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, England
Keren Sharon
Affiliation:
Department of Astronomy, University of Michigan, 500 Church St., Ann Arbor, MI 48109USA
Alberto Vecchio
Affiliation:
School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, England Birmingham Institute of Gravitational Wave Astronomy, University of Birmingham, Birmingham, B15 2TT, England
John Veitch
Affiliation:
School of Physics and Astronomy, University of Glasgow, G12 8QQ, Scotland
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Abstract

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Discovery of strongly-lensed gravitational wave (GW) sources will unveil binary compact objects at higher redshifts and lower intrinsic luminosities than is possible without lensing. Such systems will yield unprecedented constraints on the mass distribution in galaxy clusters, measurements of the polarization of GWs, tests of General Relativity, and constraints on the Hubble parameter. Excited by these prospects, and intrigued by the presence of so-called “heavy black holes” in the early detections by LIGO-Virgo, we commenced a search for strongly-lensed GWs and possible electromagnetic counterparts in the latter stages of the second LIGO observing run (O2). Here, we summarise our calculation of the detection rate of strongly-lensed GWs, describe our review of BBH detections from O1, outline our observing strategy in O2, summarize our follow-up observations of GW170814, and discuss the future prospects of detection.

Keywords

gravitational lensinggravitational wavesgalaxies: clusters: individual (MACS J0140.0−0555, MACS J1311.0−0310, RCS 0224−0002, Abell 3084, SMACS J0304.3− 4401)

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