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Adding gravitational memory to waveform catalogs using BMS balance laws

Mitman, Keefe and Iozzo, Dante A. B. and Khera, Neev and Boyle, Michael and De Lorenzo, Tommaso and Deppe, Nils and Kidder, Lawrence E. and Moxon, Jordan and Pfeiffer, Harald P. and Scheel, Mark A. and Teukolsky, Saul A. and Throwe, William (2021) Adding gravitational memory to waveform catalogs using BMS balance laws. Physical Review D, 103 (2). Art. No. 024031. ISSN 2470-0010. doi:10.1103/PhysRevD.103.024031.

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Accurate models of gravitational waves from merging binary black holes are crucial for detectors to measure events and extract new science. One important feature that is currently missing from the Simulating eXtreme Spacetimes (SXS) Collaboration’s catalog of waveforms for merging black holes, and other waveform catalogs, is the gravitational memory effect: a persistent, physical change to spacetime that is induced by the passage of transient radiation. We find, however, that by exploiting the Bondi-van der Burg-Metzner-Sachs (BMS) balance laws, which come from the extended BMS transformations, we can correct the strain waveforms in the SXS catalog to include the missing displacement memory. Our results show that these corrected waveforms satisfy the BMS balance laws to a much higher degree of accuracy. Furthermore, we find that these corrected strain waveforms coincide especially well with the waveforms obtained from Cauchy-characteristic extraction (CCE) that already exhibit memory effects. These corrected strain waveforms also evade the transient junk effects that are currently present in CCE waveforms. Last, we make our code for computing these contributions to the BMS balance laws and memory publicly available as a part of the python package sxs, thus enabling anyone to evaluate the expected memory effects and violation of the BMS balance laws.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Mitman, Keefe0000-0003-0276-3856
Boyle, Michael0000-0002-5075-5116
Deppe, Nils0000-0003-4557-4115
Kidder, Lawrence E.0000-0001-5392-7342
Moxon, Jordan0000-0001-9891-8677
Pfeiffer, Harald P.0000-0001-9288-519X
Scheel, Mark A.0000-0001-6656-9134
Teukolsky, Saul A.0000-0001-9765-4526
Throwe, William0000-0001-5059-4378
Additional Information:© 2021 American Physical Society. Received 4 November 2020; accepted 21 December 2020; published 15 January 2021. We would like to thank Dennis Pollney for sharing data that was used in the early stages of this project. Computations were performed with the High Performance Computing Center and on the Wheeler cluster at Caltech, which is supported by the Sherman Fairchild Foundation and by Caltech. This work was supported in part by the Sherman Fairchild Foundation and by NSF Grants No. PHY-2011961, No. PHY-2011968, and No. OAC-1931266 at Caltech, NSF Grants No. PHY-1912081 and No. OAC-1931280 at Cornell, and NSF Grant No. PHY-1806356, Grant No. UN2017-92945 from the Urania Stott Fund of the Pittsburgh Foundation, and the Eberly research funds of Penn State at Penn State.
Group:TAPIR, Walter Burke Institute for Theoretical Physics
Funding AgencyGrant Number
Sherman Fairchild FoundationUNSPECIFIED
Pittsburgh FoundationUN2017-92945
Pennsylvania State UniversityUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20210111-160852376
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107408
Deposited By: George Porter
Deposited On:12 Jan 2021 15:58
Last Modified:16 Nov 2021 19:02

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