Constraint on the interacting dark energy from the highly redshifted quasar data

Ming-jian, Lan; JiCheng, Pan; Pan, Yu; He, Yuhui; JiangNing, Zou; Wang, Ping

doi:10.1360/sspma-2019-0306

Sci. Sin.-Phys. Mech. Astron.

2020

DOI: 10.1360/sspma-2019-0306

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Constraint on the interacting dark energy from the highly redshifted quasar data

Lan Ming-jian

Pan JiCheng

Yu Pan

et al.

Abstract: 合最好的模型. (2) 相较于单独使用SNIa数据作为宇宙学标准烛光, 高红移的标准直尺QSO数据加入到SNIa里(SNIa+QSO)可以将相互作用暗能量模型参数限制得更紧密, 从而进一步证实了中等亮度类星体作为标准直尺应用到宇宙学研究中的潜力. (3) SNIa与SNIa+QSO(低红移)之间不存在冲突问题. (4) 在CMB+BAO+SNIa中引入射电类星体数据(CMB+BAO+SNIa+QSO), 我们得到的哈勃常数最佳拟合值与SNIa+QSO及CMB+BAO+SNIa 给出的结果在2σ 误差范围内保持一致, 并且进一步缓解了超新星与Planck2018给出的H 0 存在的冲突问题.

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Using simulated Tianqin gravitational wave data and electromagnetic wave data to study the coincidence problem and Hubble tension problem*

zhang¹,

Diao²,

Pan³

et al. 2023

Chinese Phys. C

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In this paper, we use electromagnetic wave data (H0LiCOW, $H(z)$, SNe) and gravitational wave data (Tianqin) to constrain the interacting dark energy (IDE) model and investigate the Hubble tension problem and coincidences problem. By combining these four kinds of data (Tianqin+H0LiCOW+$H(z)$+SNe), we get the parameter value at the confidence interval of $1\sigma$, $\Omega_m=0.36\pm0.18$, $\omega_x=-1.29^{+0.61}_{-0.23}$, $\xi=3.15^{+0.36}_{-1.1}$, and $H_0=70.04\pm0.42$ $kms^{-1}Mpc^{-1}$. According to our results, the best value of $H_0$ show that the Hubble tension problem can be alleviated to some extent. In addition, the $\xi+3\omega_x = -0.72^{+2.19}_{-1.19}$ of which the center value indicates the coincidence problem is slightly alleviated. However, the $\xi+3\omega_x = 0$ is still within the $1\sigma$ error range which indicates the $\Lambda$CDM model is still the model which is in best agreement with the observational data at present. Finally, we compare the constraint results of electromagnetic wave and gravitational wave on the model parameters and find that the constraint effect of electromagnetic wave data on model parameters is better than that of simulates Tianqin gravitational wave data.

show abstract

Using simulated Tianqin gravitational wave data and electromagnetic wave data to study the coincidence problem and Hubble tension problem*

zhang¹,

Diao²,

Pan³

et al. 2023

Chinese Phys. C

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show abstract

Testing the Coincidence Problem with Strong Gravitational Lens, Type Ia Supernovae and Hubble Parameter Observational Data

Diao¹,

Pan²,

Xu³

2022

Res. Astron. Astrophys.

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In this paper, we use three different kinds of observational data, including 130 strong gravitational lensing (SGL) systems, type Ia supernovae (SNeIa: Pantheon and Union2.1) and 31 Hubble parameter data points (H(z)) from cosmic chronometers, to constrain the phenomenological model (ρX∝ρmaξ). By combining these three kinds of data (Union2.1+SGL+H(z)), we get the parameter value at the confidence interval of 2σ, ΩX,0 = 0.69±0.34, ωx = -1.24±0.61, ξ = 3.8±3.9 and H0 = 70.22±0.86 kms-1Mpc-1. According to our results, we find that ΛCDM model is still the model which is in best agreement with the observational data at present, and the coincidence problem is not alleviated. In addition, the ΩX and Ωm have the same order of magnitude in 0<z< 1.26. At last, we obtain the transition redshift zT = 0.645. If the transition occurs in z > 0.645, it is necessary to introduce the dark energy interacting with dark matter.

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Observational constraints on interacting dark energy models with multiple measurements of quasars

Cao¹

2022

Sci. Sin.-Phys. Mech. Astron.

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Constraint on the interacting dark energy from the highly redshifted quasar data

Cited by 3 publications

References 43 publications

Using simulated Tianqin gravitational wave data and electromagnetic wave data to study the coincidence problem and Hubble tension problem*

Using simulated Tianqin gravitational wave data and electromagnetic wave data to study the coincidence problem and Hubble tension problem*

Testing the Coincidence Problem with Strong Gravitational Lens, Type Ia Supernovae and Hubble Parameter Observational Data

Observational constraints on interacting dark energy models with multiple measurements of quasars

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