The potential role of binary neutron star merger afterglows in multimessenger cosmology

Mastrogiovanni, S.; Duque, Raphaël; Chassande–Mottin, E.; Daigne, F.; Mochkovitch, R.

doi:10.1051/0004-6361/202040229

Cited by 14 publications

(10 citation statements)

References 86 publications

(108 reference statements)

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“…For the GW propagation parameters, we use a uniform prior in Ξ 0 ∈ [0. 3,20] and n ∈ [1,5], for c M a uniform prior c M ∈ [−2, 50] and for the number of spacetime dimensions a uniform prior in the interval D ∈ [3.8, 8] is applied. We intentionally exclude negative values of c M < −2 since otherwise d GW L could decrease with redshift (for z large).…”

Section: Application To Gwtc-3mentioning

confidence: 99%

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Current and future constraints on cosmology and modified gravitational wave friction from binary black holes

Leyde,

Mastrogiovanni,

Steer

et al. 2022

Preprint

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Gravitational wave (GW) standard sirens are well-established probes with which one can measure cosmological parameters, and are complementary to other probes like the cosmic microwave background (CMB) or supernovae standard candles. Here we focus on dark GW sirens, specifically binary black holes (BBHs) for which there is only GW data. Our approach relies on the assumption of a source-frame mass model for the BBH distribution, and we consider four models that are representative of the BBH population observed so far. In addition to inferring cosmological and mass model parameters, we use dark sirens to test modified gravity theories. These theories often predict different GW propagation equations on cosmological scales, leading to a different GW luminosity distance which in some cases can be parametrized by variables Ξ 0 and n. General relativity (GR) corresponds to Ξ 0 = 1. We perform a joint estimate of the population parameters governing mass, redshift, the variables characterizing the cosmology, and the modified GW luminosity distance. We use data from the third LIGO-Virgo-KAGRA observation run (O3) and find − for the four mass models and for three signal-to-noise ratio (SNR) cuts of 10, 11, 12 − that GR is consistently the preferred model to describe all observed BBH GW signals to date. Furthermore, all modified gravity parameters have posteriors that are compatible with the values predicted by GR at the 90% confidence interval (CI). We then focus on future observation runs O4 and O5, and for simplicity consider one specific mass model. We show that there are strong correlations between cosmological, astrophysical and modified gravity parameters. If GR is the correct theory of gravity, and assuming narrow priors on the cosmological parameters, we recover the modified gravity parameter Ξ 0 = 1.47 +0.92 −0.57 with O4, and Ξ 0 = 1.08 +0.27 −0.16 with O4 and O5. We also consider how wide priors on the cosmological parameters impact our results. If, however, Nature follows a modified gravity model with Ξ 0 = 1.8 and n = 1.91, we exclude GR at the 1.7 σ level with O4 and at the 2.3 σ level with O4 and O5 combined.

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Section: Application To Gwtc-3mentioning

confidence: 99%

“…[17][18][19]. Unfortunately however, such joint observations are predicted to be rare in future science runs [20,21].…”

Section: Introductionmentioning

confidence: 99%

Current and future constraints on cosmology and modified gravitational wave friction from binary black holes

Leyde,

Mastrogiovanni,

Steer

et al. 2022

Preprint

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“…Hotokezaka et al [12] suggest that ∼ 15 more GW170817-like events with VLBI and light-curve data will be enough to reach a 1.8% precision and potentially resolve the H 0 tension, in contrast to the ∼ 50 − 100 events required without radio data. However, Mastrogiovanni et al [99] carried out a detailed forecast study and argued that afterglow data (photometry + imaging) will be rare in future GW runs and may therefore not contribute significantly to narrowing down H 0 in the long run (see also [13]).…”

Section: Superluminal Motionmentioning

confidence: 99%

Multi-Messenger Constraints on the Hubble Constant through Combination of Gravitational Waves, Gamma-Ray Bursts and Kilonovae from Neutron Star Mergers

et al. 2022

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The simultaneous detection of gravitational waves and light from the binary neutron star merger GW170817 led to independent measurements of distance and redshift, providing a direct estimate of the Hubble constant H0 that does not rely on a cosmic distance ladder, nor assumes a specific cosmological model. By using gravitational waves as “standard sirens”, this approach holds promise to arbitrate the existing tension between the H0 value inferred from the cosmic microwave background and those obtained from local measurements. However, the known degeneracy in the gravitational-wave analysis between distance and inclination of the source led to a H0 value from GW170817 that was not precise enough to resolve the existing tension. In this review, we summarize recent works exploiting the viewing-angle dependence of the electromagnetic signal, namely the associated short gamma-ray burst and kilonova, to constrain the system inclination and improve on H0. We outline the key ingredients of the different methods, summarize the results obtained in the aftermath of GW170817 and discuss the possible systematics introduced by each of these methods.

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“…The binary neutron star merger GW170817, and its electromagnetic (EM), was the first event considered for cosmological studies [9] and provided a measurement of 𝐻 0 = 70 +19 −8 km s −1 Mpc −1 [10] (68.3% maximum posterior and highest density intervals). In this case, the redshift of the source was obtained from the observation of the GWs in association to a short gamma-ray burst with the subsequent kilonova and identification of host galaxy [11,12].…”

Section: Introductionmentioning

confidence: 99%

Cosmology in the dark: How compact binaries formation impact the gravitational-waves cosmological measurements

Mastrogiovanni¹,

Leyde²,

Karathanasis³

et al. 2022

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)

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Information about the mass spectrum of compact stars can be used to infer cosmological parameters from gravitational waves (GW) in the absence of redshift measurements obtained from electromagnetic (EM) observations. This method will be fundamental in measuring and testing cosmology with GWs for current and future ground-based GW detectors where the majority part of sources are detected without an associated EM counterpart. In this proceeding, we will discuss the prospects and limitations of this approach for studying cosmology. We will show that, even when assuming GW detectors with current sensitivities, the determination of the Hubble constant is strongly degenerate with the maximum mass for black hole production. We will discuss how assuming wrong models for the underlying population of black hole events can bias the Hubble constant estimate up to 40%.

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The potential role of binary neutron star merger afterglows in multimessenger cosmology

Cited by 14 publications

References 86 publications

Current and future constraints on cosmology and modified gravitational wave friction from binary black holes

Current and future constraints on cosmology and modified gravitational wave friction from binary black holes

Multi-Messenger Constraints on the Hubble Constant through Combination of Gravitational Waves, Gamma-Ray Bursts and Kilonovae from Neutron Star Mergers

Cosmology in the dark: How compact binaries formation impact the gravitational-waves cosmological measurements

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