Determining the Hubble Constant with Black Hole Mergers in Active Galactic Nuclei

Yang, Yang; Gayathri, V.; Alves, Lucas M. B.; Sullivan, Andrew G.; Márka, Z.; Márka, S.; Bartos, I.

doi:10.48550/arxiv.2009.13739

Cited by 3 publications

(3 citation statements)

References 43 publications

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“…[73] suggest that there is not strong statistical evidence for this association, refs. [74,75] discuss the possibility that GW190521 was by a closer high eccentric binary and [76] study GW190521 as the merger of two proca stars. Nevertheless, the analysis presented in this paper shows how GW190521-like events can be informative (when supplied with an EM counterpart) in constraining modifications of gravity at cosmological scales.…”

Section: Jcap02(2021)043mentioning

confidence: 99%

Gravitational wave friction in light of GW170817 and GW190521

Mastrogiovanni

Haegel

Karathanasis

et al. 2021

J. Cosmol. Astropart. Phys.

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We use the gravitational wave (GW) events GW170817 and GW190521, together with their proposed electromagnetic counterparts, to constrain cosmological parameters and theories of gravity beyond General Relativity (GR). In particular we consider models with a time-varying Planck mass, large extra-dimensions, and a phenomenological parametrization covering several beyond-GR theories. In all three cases, this introduces a friction term into the GW propagation equation, effectively modifying the GW luminosity distance. We set constraints on \LCDM parameters and GR deviation parameters using two sets of priors on the Hubble constant and matter energy density. With priors set to the measured Planck's mission values, we find that with the inclusion of GW190521, the two GR deviation parameters constraints improve by a factor ∼ 10. We report a number of space-time dimensions compatible with 4 with an precision of 2.5% (at 95% CL) and an upper limit to the variation of Newton's constant at the epoch of GW170817 of <20%. With wide priors on the Hubble constant and matter energy density, we show that it is still possible to constrain the \LCDM parameters and GR deviation parameters conjointly from GW170817 and GW190521, obtaining constraints on GR deviation parameters which are a factor 2–6 worse than the results using restricted priors on \LCDM parameters.

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Section: Jcap02(2021)043mentioning

confidence: 99%

Gravitational wave friction in light of GW170817 and GW190521

Mastrogiovanni

Haegel

Karathanasis

et al. 2021

J. Cosmol. Astropart. Phys.

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“…If GW190521 can be confidently associated with ZTF19abanrhr, this would be the first association of an electromagnetic counterpart to a binary black hole merger [33]; although a weak, short electromagnetic transient was observed 0.4 s after GW150914 [17]. This has significant implications: the identification of the host AGN, which has a well-measured spectroscopic redshift 7 of z = 0.438 ± 0.000 03 allows a new standard-candle measurement of the Hubble constant [15,19,21,28,44] comparable to that of GW170817 [2]. In addition, it has implications for the study of the gaseous accretion disk surrounding the AGN and the population properties of the compact binary systems observed by LIGO/Virgo [27,43].…”

Section: Introductionmentioning

confidence: 90%

Current observations are insufficient to confidently associate the binary black hole merger GW190521 with AGN J124942.3 + 344929

Ashton

Ackley

Hernandez

2021

Class. Quantum Grav.

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Recently, Graham et al (2020 arXiv:2006.14122) identified ZTF19abanrhr as a candidate electromagnetic counterpart to the binary black hole merger GW190521. The authors argue that the observations are consistent with a kicked binary black hole interacting with the accretion disk of the active galactic nucleus AGN J124942.3 + 344929. If a real association (rather than happenstance), this has implications for the sources of LIGO/Virgo binary mergers, future prospects for electromagnetic counterparts, and measurements of the expansion rate of the Universe. In this work, we provide an analysis of the multi-messenger coincident-significance based on the localisation overlap and find that, under optimistic assumptions, the odds of a common source for GW190521 and ZTF19abanrhr range between 1 and 12. These odds are strongly dependent on the waveform model and, with current models, are unable to consistently capture both the effects of precession and orbital eccentricity. We consider this insufficient evidence to warrant confidently associating GW190521 with ZTF19abanrhr and hence caution against any astrophysical conclusions based on the association.

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“…MBHBs are one of the main scientific goals of the space-borne gravitational wave observatory because of their high detection significance. Hence, these objects are suitable for precise astrophysics and cosmology studies [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

LitePIG: a lite parameter inference system for the gravitational wave in the millihertz band

Wang

2023

Commun. Theor. Phys.

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We present a python based parameter inference system for the gravitational wave (GW) measured in the millihertz band. This system includes the following features: the GW waveform originated from the massive black hole binaries (MBHB), the stationary instrumental gaussian noise, the higher-order harmonic modes, the full response function from the time delay interferometry (TDI) and the gaussian likelihood function with the dynamic nested parameter sampler. In particular, we highlight the role of higher-order modes. By including these modes, the luminosity distance estimation precision can be improved roughly by a factor of 50, compared with the case with only the leading order (ℓ = 2, |m| = 2) mode. This is due to the response function of different harmonic modes on the inclination angle are different. Hence, it can help to break the distance-inclination degeneracy. Furthermore, we show the robustness of testing general relativity (GR) by using the higher-order harmonics. Our results show that the GW from MBHB can simultaneouslyconstrain four of the higher harmonic amplitudes (deviation from GR) with 95% confidence level of c21 = 0.54+0.82−1.05, c32 = −0.65+3.02 −1.42, c33 = 0.56+0.79 −0.96 and c44 = 1.57+3.22 −2.19, respectively

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Determining the Hubble Constant with Black Hole Mergers in Active Galactic Nuclei

Cited by 3 publications

References 43 publications

Gravitational wave friction in light of GW170817 and GW190521

Gravitational wave friction in light of GW170817 and GW190521

Current observations are insufficient to confidently associate the binary black hole merger GW190521 with AGN J124942.3 + 344929

LitePIG: a lite parameter inference system for the gravitational wave in the millihertz band

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