Testing the anisotropy of the universe using the simulated gravitational wave events from advanced LIGO and Virgo

Lin, Hai-Nan; Jin, Li; Li, Xin

doi:10.1140/epjc/s10052-018-5841-x

Cited by 11 publications

(9 citation statements)

References 36 publications

(48 reference statements)

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“…In future works, different methods to test the cosmological isotropy assumption, as those presented in (Marinucci & Peccati 2011;Jun & Genton 2012;Hitczenko & Stein 2012;Guinness & Fuentes 2016;Sahoo et al 2017), can be readily envisaged and performed in light of larger, more homogeneous cosmological data sets, that will be provided in the years to come. Among potential applications, we list the SN Ia sample from LSST (LSST Science Collaboration et al 2009), luminosity distance measurements from standard sirens with next-generation gravitational wave experiments (Cai et al 2018;Lin et al 2018), besides large-area galaxy surveys such as SKA (Schwarz et al 2015). Given all these observational data and statistical machinery available, we should be able to definitely underpin the validity of CP at large scales.…”

Section: Resultsmentioning

confidence: 99%

A Model-independent Test of Cosmic Isotropy with Low-z Pantheon Supernovae

Andrade

Bengaly

Santos

et al. 2018

ApJ

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The assumption of homogeneity and isotropy on large scales is one of the main hypothesis of the standard cosmological model. In this paper, we revisit a test of cosmological isotropy using type Ia supernova (SN Ia) distances provided by the latest SN Ia compilation available, namely, the Pantheon compilation. We perform a model-independent analysis by selecting low-redshift subsamples lying in two redshift intervals, i.e., z ≤ 0.10 and z ≤ 0.20. By mapping the directional asymmetry of cosmological parameters across the sky, we show that the current SN Ia data favours the hypothesis of cosmic isotropy, as the anisotropy found in the maps can be mostly ascribed to the non-uniform sky coverage of the data rather than an actual cosmological signal. These results confirm that there is null evidence against the cosmological principle in the low-redshift universe.

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Section: Resultsmentioning

confidence: 99%

A Model-independent Test of Cosmic Isotropy with Low-z Pantheon Supernovae

Andrade

Bengaly

Santos

et al. 2018

ApJ

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“…Recently, the detection of the GW event GW170817 coincident with its EM counterparts from a binary neutron star (NS) merger provided a standard-siren measurement of the Hubble constant H 0 (Abbott et al 2017). In addition to measuring H 0 , other cosmological applications of future GW data have also been explored, such as constraining the cosmological parameters and the nature of dark energy (e.g., Holz & Hughes 2005;Zhao et al 2011;Del Pozzo 2012;Cai & Yang 2017;Del Pozzo et al 2017;Du et al 2018;Wei et al 2018), probing the CDD relation (Yang et al 2017), testing the anisotropy of the universe (Cai et al 2018;Lin et al 2018b), weighing the total neutrino mass (Wang et al 2018), estimating the time variation of Newton's constant G , and determining the cosmic curvature in a model-independent way (Wei 2018).…”

Section: Introductionmentioning

confidence: 99%

Unbiased Cosmic Opacity Constraints from Standard Sirens and Candles

Wei

2019

ApJ

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The observation of Type Ia supernovae (SNe Ia) plays an essential role in probing the expansion history of the universe. But the possible presence of cosmic opacity can degrade the quality of SNe Ia. The gravitationalwave (GW) standard sirens, produced by the coalescence of double neutron stars and black hole-neutron star binaries, provide an independent way to measure the distances of GW sources, which are not affected by cosmic opacity. In this paper, we first propose that combining the GW observations of third-generation GW detectors with SN Ia data in similar redshift ranges offers a novel and model-independent method to constrain cosmic opacity. Through Monte Carlo simulations, we find that one can constrain the cosmic opacity parameter κ with an accuracy of σ κ ∼ 0.046 by comparing the distances from 100 simulated GW events and 1048 current Pantheon SNe Ia. The uncertainty of κ can be further reduced to ∼ 0.026 if 800 GW events are considered. We also demonstrate that combining 2000 simulated SNe Ia and 1000 simulated GW events could result in much severer constraints on the transparent universe, for which κ = 0.0000 ± 0.0044. Compared to previous opacity constraints involving distances from other cosmic probes, our method using GW standard sirens and SN Ia standard candles at least achieves competitive results.

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“…In the past, the simulated GW data have been used to measure the cosmological parameters (e.g., Holz & Hughes 2005;Zhao et al 2011;Del Pozzo 2012;Cai et al 2016;Del Pozzo et al 2017;Liao et al 2017b;Wei & Wu 2017b;Wei et al 2018), test the cosmic distance duality relation (Yang et al 2017), weigh the total neutrino mass (Wang et al 2018), explore the anisotropy of the universe (Cai et al 2018;Lin et al 2018), and constrain the time variation of Newton's constant G . We note that one recent work (Jimenez et al 2018) provided an analysis of curvature constraints in a model-independent way using distance probes: GWs, cosmic chronometers, and redshift drift.…”

Section: Introductionmentioning

confidence: 99%

Model-independent Curvature Determination from Gravitational-wave Standard Sirens and Cosmic Chronometers

Wei

2018

ApJ

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The detection of gravitational waves (GWs) provides a direct way to measure the luminosity distance, which enables us to probe cosmology. In this paper, we continue to expand the application of GW standard sirens in cosmology, and propose that the spatial curvature can be estimated in a model-independent way by comparing the distances from future GW sources and current cosmic-chronometer observations. We expect an electromagnetic counterpart of the GW event to give the source redshift, and simulate hundreds of GW data from the coalescence of double neutron stars and black hole-neutron star binaries using the Einstein Telescope as reference. Our simulations show that, from 100 simulated GW events and 31 current cosmic-chronometer measurements, the error of the curvature parameter Ω K is expected to be constrained at the level of ∼ 0.125. If 1000 GW events are observed, the uncertainty of Ω K would be further reduced to ∼ 0.040. We also find that adding 50 mock H(z) data (consisting of 81 cosmic-chronometer data and 1000 simulated GW events) could result in much tighter constraint on the zero cosmic curvature, for which, Ω K = −0.002 ± 0.028. Compared to some actual model-independent curvature tests involving the distances from other cosmic probes, this method with GW data achieves constraints with much higher precision.

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Testing the anisotropy of the universe using the simulated gravitational wave events from advanced LIGO and Virgo

Cited by 11 publications

References 36 publications

A Model-independent Test of Cosmic Isotropy with Low-z Pantheon Supernovae

A Model-independent Test of Cosmic Isotropy with Low-z Pantheon Supernovae

Unbiased Cosmic Opacity Constraints from Standard Sirens and Candles

Model-independent Curvature Determination from Gravitational-wave Standard Sirens and Cosmic Chronometers

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