Tracing the redshift evolution of Hubble parameter with gravitational-wave standard sirens

Nishizawa, A.; Taruya, Atsushi; Saito, Shun

doi:10.1103/physrevd.83.084045

Cited by 54 publications

(72 citation statements)

References 33 publications

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“…Indeed, the luminosity distance to GW150914 was estimated to be 410 +160 −180 Mpc using this technique [1]. With the redshift information from independent observations of an electromagnetic (EM) counterpart, one can directly constrain the absolute distance-redshift relation, and hence obtains constraints on cosmological parameters including the Hubble constant and dark energy parameters [5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Measuring the distance-redshift relation with the cross-correlation of gravitational wave standard sirens and galaxies

2016

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Gravitational waves from inspiraling compact binaries are known to be an excellent absolute distance indicator, yet it is unclear whether electromagnetic counterparts of these events are securely identified for measuring their redshifts, especially in the case of black hole-black hole mergers such as the one recently observed with the Advanced LIGO. We propose to use the cross-correlation between spatial distributions of gravitational wave sources and galaxies with known redshifts as an alternative means of constraining the distance-redshift relation from gravitational waves. In our analysis, we explicitly include the modulation of the distribution of gravitational wave sources due to weak gravitational lensing. We show that the cross-correlation analysis in next-generation observations will be able to tightly constrain the relation between the absolute distance and the redshift, and therefore constrain the Hubble constant as well as dark energy parameters.

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Section: Introductionmentioning

confidence: 99%

Measuring the distance-redshift relation with the cross-correlation of gravitational wave standard sirens and galaxies

2016

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“…Recently, a third method has been proposed to obtain OHD from the gravitational wave standard sirens (Nishizawa et al 2011). OHD is shown to be consistent with the standard cosmological model (Lin et al 2009;Stern et al 2010a).…”

Section: Introductionmentioning

confidence: 99%

Constraints on Lemaître-Tolman-Bondi Models From Observational Hubble Parameter Data

Wang¹,

Zhang²

2012

ApJ

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We use the observational Hubble parameter data (OHD), both the latest observational dataset (Stern et al. (2010a), referred to as SJVKS) and the simulated datasets, to constrain Lemaître-TolmanBondi (LTB) void models. The necessity of the consistency check on OHD itself in the LTB cosmology is stressed. Three voids are chosen as test models and are constrained using the Union2 dataset of SN Ia as well as OHD. Despite their different parametrization, the results from our test models show some indicating similarities, e.g., the best-fit voids obtained from OHD are all considerably broader than those from SN Ia. Due to the small size of the SJVKS dataset, the constraints are not conclusive. The constraining power of the future OHD observations are therefore investigated, through a Figure of Merit (FoM) analysis based on the Monte Carlo simulated data. We found that, in the case that the future OHD become more consistent with SN Ia, the results from the test models are almost unanimous: 1) as many as 32 OHD data points at the SJVKS-like uncertainty level are needed to give a higher FoM than the Union2 dataset of SN Ia; 2) precise observation helps reduce this required number; 3) increasing the survey depth does not always increase the FoM. On the other hand, if the future OHD and the Union2 dataset keep favor different voids, in a similar manner as they do at present, the 1σ confidence regions obtained from the two probes should finally separate. We test this conjecture and found that, the minimum observational requirement (the size of the dataset, the uncertainty level and the survey depth) for this inconsistency to emerge depends strongly on the void model.

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“…With the redshift information determined by an electromagnetic (EM) follow-up observation, the standard siren can be an accurate tracer of the cosmic expansion [6]. The potential power of this method as a dark-energy probe has been investigated with ground-and space-based detector configurations for GWs [1,5,[7][8][9][10][11][12][13][14][15][16][17]. The most of the preceding works assume that the redshifts of all GW sources are known by EM observations.…”

Section: Introductionmentioning

confidence: 99%

Gravitational-wave standard siren without redshift identification

Nishizawa

Yagi

Taruya

et al. 2012

J. Phys.: Conf. Ser.

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Proposed space-based gravitational-wave (GW) detectors such as DECIGO and BBO will detect ∼ 10 6 neutron-star (NS) binaries and determine the luminosity distances to the binaries with high precision. Combining the luminosity distances with cosmologically-induced phase corrections on the GWs, cosmological expansion out to high redshift can be measured without the redshift determinations of host galaxies by electromagnetic observation and can be a unique probe for dark energy. This article is based on the results obtained in [1] where we investigated constraining power of the GW standard siren without redshift information on the equation of state of dark energy with future space-based GW detectors. We also compare the results with those obtained with other instruments and methods.

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Tracing the redshift evolution of Hubble parameter with gravitational-wave standard sirens

Cited by 54 publications

References 33 publications

Measuring the distance-redshift relation with the cross-correlation of gravitational wave standard sirens and galaxies

Measuring the distance-redshift relation with the cross-correlation of gravitational wave standard sirens and galaxies

Constraints on Lemaître-Tolman-Bondi Models From Observational Hubble Parameter Data

Gravitational-wave standard siren without redshift identification

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