Abstract
Owing to the forecasted improved sensitivity of ground-based gravitational-wave detectors, new research avenues will become accessible. This is the case for gravitational-wave strong lensing, predicted with a non-negligible observation rate in the coming years. However, because one needs to investigate all the event pairs in the data, searches for strongly lensed gravitational waves are often computationally heavy, and one faces high false-alarm rates. In this paper, we present upgrades made to the GOLUM software, making it more reliable while increasing its speed by re-casting the look-up table, imposing a sample control, and implementing symmetric runs on the two lensed images. We show how the recovered posteriors have improved coverage of the parameter space and how we increase the pipeline’s stability. Finally, we show the results obtained by performing a joint analysis of all the events reported until the GWTC-3 catalogue, finding similar conclusions to the ones presented in the literature.
Original language | English |
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Pages (from-to) | 3088-3098 |
Number of pages | 11 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 526 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Dec 2023 |
Bibliographical note
Publisher Copyright:© 2023 Oxford University Press. All rights reserved.
Funding
The authors thank Harsh Narola, Sylvia Biscoveanu, and John Vietch for useful discussions. We also thank Mick Wright for carefully re-reading the manuscript. JJ, KH, and CVDB are supported by the research program of the Netherlands Organisation for Scientific Research (NWO). The authors are grateful for computational resources provided by the LIGO Laboratory and supported by the National Science Foundation Grant Nos. PHY-0757058 and PHY-0823459. This material is based upon work supported by NSF’s LIGO Laboratory which is a major facility fully funded by the National Science Foundation. The authors thank Harsh Narola, Sylvia Biscoveanu, and John Vietch for useful discussions. We also thank Mick Wright for carefully re-reading the manuscript. JJ, KH, and CVDB are supported by the research program of the Netherlands Organisation for Scientific Research (NWO). The authors are grateful for computational resources provided by the LIGO Laboratory and supported by the National Science Foundation Grant Nos. PHY-0757058 and PHY-0823459. This material is based upon work supported by NSF’s LIGO Laboratory which is a major facility fully funded by the National Science Foundation.
Funders | Funder number |
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Harsh Narola | |
Sylvia Biscoveanu | |
National Science Foundation | PHY-0823459, PHY-0757058 |
Nederlandse Organisatie voor Wetenschappelijk Onderzoek |
Keywords
- gravitational lensing: strong
- gravitational waves