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  Event rate predictions of strongly lensed gravitational waves with detector networks and more realistic templates

Yang, L., Wu, S., Liao, K., Ding, X., You, Z., Cao, Z., et al. (2022). Event rate predictions of strongly lensed gravitational waves with detector networks and more realistic templates. Monthly Notices of the Royal Astronomical Society, 509(3), 3772-3778. doi:10.1093/mnras/stab3298.

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 Creators:
Yang , Lilan, Author
Wu, Shichao1, Author              
Liao, Kai, Author
Ding, Xuheng, Author
You, Zhiqiang, Author
Cao, Zhoujian, Author
Biesiada, Marek, Author
Zhu, Zong-Hong, Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: Astrophysics, Galaxy Astrophysics, astro-ph.GA
 Abstract: Strong lensing of gravitational waves (GWs) is attracting growing attention of the community. The event rates of lensed GWs by galaxies were predicted in numerous papers, which used some approximations to evaluate the GW strains detectable by a single detector. The joint-detection of GW signals by a network of instruments will increase the detecting ability of fainter and farther GW signals, which could increase the detection rate of the lensed GWs, especially for the 3rd generation detectors, e.g., Einstein Telescope (ET) and Cosmic Explorer (CE). Moreover, realistic GW templates will improve the accuracy of the prediction. In this work, we consider the detection of galaxy-scale lensed GW events under the 2nd, 2.5th, and 3rd generation detectors with the network scenarios and adopt the realistic templates to simulate GW signals. Our forecast is based on the Monte Carlo technique which enables us to take Earth's rotation into consideration. We find that the overall detection rate is improved, especially for the 3rd generation detector scenarios. More precisely, it increases by ~37% adopting realistic templates, and under network detection strategy, further increases by ~58% comparing with adoption of the realistic templates, and we estimate that the 3rd generation GW detectors will detect hundreds lensed events per year. The effect from the Earth's rotation is weakened in the detector network strategy.

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 Dates: 2021-05-142021-11-152022
 Publication Status: Published in print
 Pages: 7pages, 1 figure, accepted by MNRAS
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 Rev. Type: -
 Identifiers: arXiv: 2105.07011
DOI: 10.1093/mnras/stab3298
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
Source Genre: Journal
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Pages: - Volume / Issue: 509 (3) Sequence Number: - Start / End Page: 3772 - 3778 Identifier: -