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Cosmography using strongly lensed gravitational waves from binary black holes

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arxiv 2211.12212 v2 pith:SAA3LQVT submitted 2022-11-22 astro-ph.CO gr-qc

classification astro-ph.COgr-qc
keywords lensedeventsexpectedbinaryblackcosmologicaldelaydistribution
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

Third generation gravitational wave (GW) detectors are expected to detect millions of binary black hole (BBH) mergers during their operation period. A small fraction of them ($\sim 1\%$) will be strongly lensed by intervening galaxies and clusters, producing multiple observable copies of the GW signals. The expected number of lensed events and the distribution of the time delay between lensed events depend on the cosmology. We develop a Bayesian analysis method for estimating cosmological parameters from the detected number of lensed events and their time delay distribution. The expected constraints are comparable to that obtained from other cosmological measurements, but probing a different redshift regime ($z \sim 10$) that is not explored by other probes.

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Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probability of gravitational-wave lensing by intermediate-mass black holes and globular clusters

    astro-ph.CO 2026-08 conditional novelty 6.0 of 10

    The rate of compound gravitational-wave lensing by intermediate-mass black holes in globular clusters is at most about 10^-3 of galaxy-scale lensed events, disfavoring GW231123 as such an event.

  2. Forecasting Constraints on Cosmology and Modified Gravitational-wave Propagation by Combining Strongly Lensed Gravitational Waves and Galaxy Surveys

    astro-ph.CO 2026-01 conditional novelty 6.0 of 10

    Simulated doubly lensed gravitational-wave events matched to galaxy surveys give a forecasted H0 precision of 0.42% with next-generation detectors.

  3. Can Eccentric Binary Black Hole Signals Mimic Gravitational-Wave Microlensing?

    gr-qc 2025-12 conditional novelty 6.0 of 10

    Eccentric BBH signals can masquerade as wave-optics microlensing in quasicircular analyses, but eccentric recovery templates break the degeneracy.

  4. Accelerated inference of microlensed gravitational waves with machine learning

    astro-ph.CO 2025-11 conditional novelty 5.0 of 10

    A neural posterior estimator trained on wave-optics-microlensed gravitational-wave signals recovers source and lens parameters and Bayes factors consistent with Bilby, about 10 times faster.

  5. Precision Joint Constraints on Cosmology and Gravity Using Strongly Lensed Gravitational Wave Populations

    gr-qc 2025-05 conditional novelty 5.0 of 10

    A forecast from simulated strongly lensed gravitational wave data finds that Einstein Telescope could constrain H0 to 0.4-0.7% and PPN gamma to 0.5-3.3% (68% CI) under idealized assumptions.

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