Probing cosmic anisotropy with GW/FRB as upgraded standard sirens

Cai, Rong-Gen; Liu, Tong-Bo; Wang, Shao-Jiang; Xu, Wu-Tao

doi:10.1088/1475-7516/2019/09/016

Cited by 9 publications

(2 citation statements)

References 55 publications

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“…[64][65][66][67][68][69], whereafter, the GW/FRB association system as a complementary cosmological probe is discussed in Refs. [70,71]. The GW sources detected by future groundbased GW detectors are expected to be BNSs or stellarmass BBHs, which mainly distribute at z < 3.…”

Section: Introductionmentioning

confidence: 99%

Forecast for cosmological parameter estimation with gravitational-wave standard sirens from the LISA-Taiji network

Wang

Jin

Zhang

et al. 2021

Sci. China Phys. Mech. Astron.

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LISA and Taiji are expected to form a space-based gravitational-wave (GW) detection network in the future. In this work, we make a preliminary forecast for the cosmological parameter estimation with the GW standard siren observation from LISA-Taiji network. We simulate the standard siren data based on a configuration angle of 40 • between LISA and Taiji. Three models for the population of massive black hole binary (MBHB), i.e., pop III, Q3nod, and Q3d, are considered to predict the events of MBHB mergers. We choose the ΛCDM, wCDM, and CPL models as representatives to make an analysis. We find that, for dynamical dark energy models, the LISA-Taiji network could significantly improve the constraints on the equation-of-state parameter of dark energy compared with the single Taiji mission. It is concluded that the GW standard sirens from LISA-Taiji network will become a useful cosmological probe in understanding the nature of dark energy in the future.

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Section: Introductionmentioning

confidence: 99%

Forecast for cosmological parameter estimation with gravitational-wave standard sirens from the LISA-Taiji network

Wang

Jin

Zhang

et al. 2021

Sci. China Phys. Mech. Astron.

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“…Actually, in the literature, there are some interesting works using FRBs in cosmology, e.g. [21,22,[29][30][31][32][33][34][35][36][37][38]105]. In the present work, we are interested in using the simulated FRBs to test the cosmological principle, which is one of the pillars of modern cosmology.…”

Section: Introductionmentioning

confidence: 99%

Cosmic anisotropy and fast radio bursts

Qiang

Deng

Hao

2020

Class. Quantum Grav.

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In the recent years, the field of Fast Radio Bursts (FRBs) is thriving and growing rapidly. It is of interest to study cosmology by using FRBs with known redshifts. In the present work, we try to test the possible cosmic anisotropy with the simulated FRBs. We find that at least 2800, 190, 100 FRBs are competent to find the cosmic anisotropy with a dipole amplitude 0.01, 0.03, 0.05, respectively. Unfortunately, even 10000 FRBs are not competent to find the tiny cosmic anisotropy with a dipole amplitude of O(10 −3 ). On the other hand, at least 20 FRBs with known redshifts are competent to find the cosmic anisotropy with a dipole amplitude 0.1. We expect that such a big cosmic anisotropy can be ruled out by using only a few tens of FRBs with known redshifts in the near future.PACS numbers: 98.80.Es, 95.36.+x, 98.70.Dk

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Testing cosmic anisotropy with Pantheon sample and quasars at high redshifts

Wang

2020

A&A

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In this paper, we investigate the cosmic anisotropy from the SN-Q sample, consisting of the Pantheon sample and quasars, by employing the hemisphere comparison (HC) method and the dipole fitting (DF) method. Compared to the Pantheon sample, the new sample has a larger redshift range, a more homogeneous distribution, and a larger sample size. For the HC method, we find that the maximum anisotropy level is ALmax = 0.142 ± 0.026 in the direction (l, b) = (316.08°−129.48+27.41, 4.53°−64.06+26.29). The magnitude of anisotropy is A = (−8.46−5.51+4.34) × 10−4 and the corresponding preferred direction points toward (l, b) = (29.31°−30.54+30.59, 71.40°−9.72+9.79) for the quasar sample from the DF method. The combined SN and quasar sample is consistent with the isotropy hypothesis. The distribution of the dataset might impact the preferred direction from the dipole results. The result is weakly dependent on the redshift from the redshift tomography analysis. There is no evidence of cosmic anisotropy in the SN-Q sample. Though some results obtained from the quasar sample are not consistent with the standard cosmological model, we still do not find any distinct evidence of cosmic anisotropy in the SN-Q sample.

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Probing cosmic anisotropy with GW/FRB as upgraded standard sirens

Cited by 9 publications

References 55 publications

Forecast for cosmological parameter estimation with gravitational-wave standard sirens from the LISA-Taiji network

Forecast for cosmological parameter estimation with gravitational-wave standard sirens from the LISA-Taiji network

Cosmic anisotropy and fast radio bursts

Testing cosmic anisotropy with Pantheon sample and quasars at high redshifts

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