Increase of the Number of Detectable Gravitational Waves Signals Due to Gravitational Lensing

Varvella, M.; Angonin, Marie-Christine; Tourrenc, P.

doi:10.1023/b:gerg.0000018085.46454.ff

Cited by 7 publications

(7 citation statements)

References 18 publications

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“…The features of wave dynamics make the fraction of lensed events larger than that optics approximation has ever predicted. This fact motivated many authors to study lensing effects on gravitational waves in the past decade [3][4][5][6][7][8][9][10][11][12][13][14][15][16]. As noted in [4], the lensing effect is very important for the space-based gravitational wave detector LISA [17].…”

Section: Introductionmentioning

confidence: 98%

Gravitational lensing effects on parameter estimation in gravitational wave detection with advanced detectors

Cao

Wang

2014

Phys. Rev. D

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The gravitational lensing effect is important to the detection of electromagnetic signals in astrophysics. The gravitational wave lensing effect has also been found significant to gravitational wave detection in the past decade. Recent analysis shows that the lensing events for advanced detectors could be quite plausible. The black holes in our MilkyWay Galaxy may play the role of lens objects. These facts motivate us to study the lensing effects on gravitational wave signals for advanced detectors. Taking advanced LIGO and Einstein Telescope for examples, we investigate the lensing effects on the parameter extraction of gravitational wave signals. Using the Markov chain Monte Carlo simulation together with matched filtering methods, we find that the lensing effect for a lens object with small mass is negligible. But when the mass of the lens object increases to larger than 1000M⊙ the lensing effect becomes important. Using the template without lensing corrections would result in loss of signal detections. In contrast if we consider templates with lensing effects, the lensed signal may provide much information about the lens black hole. These facts may give us a new way to determine the parameters of the lensing object. For example, this kind of signal may also help us estimate the mass and the distance of the supermassive black hole hosted at the center of our Galaxy

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Section: Introductionmentioning

confidence: 98%

Gravitational lensing effects on parameter estimation in gravitational wave detection with advanced detectors

Cao

Wang

2014

Phys. Rev. D

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“…GWs produced by the binary systems have much longer wavelengths than the (visible) light, so the wave optics effects [3,[7][8][9][10] would be strong if the lens is not massive enough. For GWs detectable by the groundbased detectors (1 -10 4 Hz), the geometric optics works if the mass of the lens is larger than about 10 4 M , while for GWs with the frequencies in the LISA band (10 −4 -10 −1 Hz), the lens mass should be at least 10 8 M [11,12]. Despite some interesting phenomena (e.g., diffraction) due to the wave optics [8,13], we would like to concentrate on the geometric optics.…”

Section: Introductionmentioning

confidence: 99%

Gravitational wave interference via gravitational lensing: Measurements of luminosity distance, lens mass, and cosmological parameters

et al. 2020

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The gravitational lensing of gravitational waves might cause beat patterns detectable by interferometers. The feature of this kind of signal is the existence of the beat pattern in the early inspiral phase, followed by seemly randomly changing profile. After the strain peaks for the first time, the signal takes the usual waveform and the strains peaks for the second time. Once this signal is detected, the actual magnification factors can be obtained, so the true luminosity distance of the binary system is known. We can also infer the mass of the lens and the cosmological parameters with unprecedented precision due to the high accuracy in the measurement of the waveform.

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“…Strong-lensing of GWs had been considered by numerous authors in advance of the advent of direct GW detections (Wang, Stebbins & Turner 1996;Takahashi & Nakamura 2003;Takahashi 2004;Seto 2004;Varvella, Angonin & Tourrenc 2004;Sereno et al 2010Sereno et al , 2011Piórkowska, Biesiada & Zhu 2013;Biesiada et al 2014). In particular, the degeneracy between the luminosity distance to and thus source-frame mass of a GW source, and any gravitational magnification suffered by the source noted by Wang, Stebbins & Turner (1996) is interesting in light of the reported BH masses thus far (see also Dai, Venumadhav & Sigurdson 2017).…”

Section: Introductionmentioning

confidence: 99%

What if LIGO’s gravitational wave detections are strongly lensed by massive galaxy clusters?

Smith

Jauzac

Veitch

et al. 2018

Monthly Notices of the Royal Astronomical Society

113

108

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Motivated by the preponderance of so-called "heavy black holes" in the binary black hole (BBH) gravitational wave (GW) detections to date, and the role that gravitational lensing continues to play in discovering new galaxy populations, we explore the possibility that the GWs are strongly-lensed by massive galaxy clusters. For example, if one of the GW sources were actually located at z = 1, then the rest-frame mass of the associated BHs would be reduced by a factor ∼ 2. Based on the known populations of BBH GW sources and strong-lensing clusters, we estimate a conservative lower limit on the number of BBH mergers detected per detector year at LIGO/Virgo's current sensitivity that are multiply-imaged, of R detect ≃ 10 −5 yr −1 . This is equivalent to rejecting the hypothesis that one of the BBH GWs detected to date was multiplyimaged at ∼ < 4σ. It is therefore unlikely, but not impossible that one of the GWs is multiply-imaged. We identify three spectroscopically confirmed strong-lensing clusters with well constrained mass models within the 90% credible sky localisations of the BBH GWs from LIGO's first observing run. In the event that one of these clusters multiply-imaged one of the BBH GWs, we predict that 20 − 60% of the putative next appearances of the GWs would be detectable by LIGO, and that they would arrive at Earth within three years of first detection.

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Increase of the Number of Detectable Gravitational Waves Signals Due to Gravitational Lensing

Cited by 7 publications

References 18 publications

Gravitational lensing effects on parameter estimation in gravitational wave detection with advanced detectors

Gravitational lensing effects on parameter estimation in gravitational wave detection with advanced detectors

Gravitational wave interference via gravitational lensing: Measurements of luminosity distance, lens mass, and cosmological parameters

What if LIGO’s gravitational wave detections are strongly lensed by massive galaxy clusters?

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