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Testing general relativity using golden black-hole binaries

Ghosh, Abhirup and Ghosh, Archisman and Johnson-McDaniel, Nathan K. and Mishra, Chandra Kant and Ajith, Parameswaran and Del Pozzo, Walter and Nichols, David A. and Chen, Yanbei and Nielsen, Alex B. and Berry, Christopher P. L. and London, Lionel (2016) Testing general relativity using golden black-hole binaries. Physical Review D, 94 (2). Art. No. 021101(R). ISSN 2470-0010.

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The coalescences of stellar-mass black-hole binaries through their inspiral, merger, and ringdown are among the most promising sources for ground-based gravitational-wave (GW) detectors. If a GW signal is observed with sufficient signal-to-noise ratio, the masses and spins of the black holes can be estimated from just the inspiral part of the signal. Using these estimates of the initial parameters of the binary, the mass and spin of the final black hole can be uniquely predicted making use of general-relativistic numerical simulations. In addition, the mass and spin of the final black hole can be independently estimated from the merger-ringdown part of the signal. If the binary black-hole dynamics is correctly described by general relativity (GR), these independent estimates have to be consistent with each other. We present a Bayesian implementation of such a test of general relativity, which allows us to combine the constraints from multiple observations. Using kludge modified GR waveforms, we demonstrate that this test can detect sufficiently large deviations from GR and outline the expected constraints from upcoming GW observations using the second-generation of ground-based GW detectors.

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Ajith, Parameswaran0000-0001-7519-2439
Chen, Yanbei0000-0002-9730-9463
Additional Information:© 2016 American Physical Society. (Received 16 February 2016; published 11 July 2016) We thank J. Veitch and A. Nagar for assistance with the LALInference and ihes eob codes, respectively. We also thank K. G. Arun, A. Buonanno, N. Christensen, B. R. Iyer, C. Messenger, A. Mukherjee, B. S. Sathyaprakash, and C. Van Den Broeck for useful discussions. Ar. G., N. K. J.-M., and P. A. acknowledge support from the AIRBUS Group Corporate Foundation through a chair in “Mathematics of Complex Systems” at ICTS. P. A.’s research was, in addition, supported by a Ramanujan Fellowship from the Science and Engineering Research Board (SERB), India, the SERB FastTrack fellowship SR/FTP/PS-191/2012, and the Max Planck Society and the Department of Science and Technology, India, through a Max Planck Partner Group at ICTS. W. D. P. was partly supported by a Leverhulme Trust research project grant. Y. C.’s research was supported by National Science Foundation Grant No. PHY-1404569, and D. N.’s was supported by National Science Foundation Grant No. PHY-1404105. C. P. L. B. was supported by the Science and Technology Facilities Council. Computations were performed at the ICTS clusters Mowgli, Dogmatix, and Alice.
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AIRBUS Group Corporate FoundationUNSPECIFIED
Science and Engineering Research Board (SERB)SR/FTP/PS-191/2012
Max Planck SocietyUNSPECIFIED
Department of Science and Technology (India)UNSPECIFIED
Leverhulme TrustUNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
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Record Number:CaltechAUTHORS:20160729-141526122
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Official Citation:Testing general relativity using golden black-hole binaries Abhirup Ghosh, Archisman Ghosh, Nathan K. Johnson-McDaniel, Chandra Kant Mishra, Parameswaran Ajith, Walter Del Pozzo, David A. Nichols, Yanbei Chen, Alex B. Nielsen, Christopher P. L. Berry, and Lionel London Phys. Rev. D 94, 021101(R)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69325
Deposited By: George Porter
Deposited On:29 Jul 2016 21:43
Last Modified:09 Mar 2020 13:18

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