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Kinematic Constraints on Spatial Curvature from Supernovae Ia and Cosmic Chronometers
Monthly Notices of the Royal Astronomical Society ( IF 4.7 ) Pub Date : 2020-11-07 , DOI: 10.1093/mnras/staa3426
J F Jesus 1, 2 , R Valentim 3 , P H R S Moraes 4 , M Malheiro 5
Affiliation  

An approach to estimate the spatial curvature $\Omega_k$ from data independently of dynamical models is suggested, through kinematic parameterizations of the comoving distance ($D_{C}(z)$) with third degree polynomial, of the Hubble parameter ($H(z)$) with a second degree polynomial and of the deceleration parameter ($q(z)$) with first order polynomial. All these parameterizations were done as function of redshift $z$. We used SNe Ia dataset from Pantheon compilation with 1048 distance moduli estimated in the range $0.01

中文翻译:

超新星 Ia 和宇宙天文钟对空间曲率的运动学约束

建议一种独立于动力学模型的数据估计空间曲率 $\Omega_k$ 的方法,通过具有三次多项式的哈勃参数 ($H) 的联动距离 ($D_{C}(z)$) 的运动学参数化(z)$) 与二阶多项式和减速参数 ($q(z)$) 与一阶多项式。所有这些参数化都是作为 redshift $z$ 的函数完成的。我们使用了来自 Pantheon 编译的 SNe Ia 数据集,其中 1048 个距离模量估计在 0.01 美元的范围内
更新日期:2020-11-07
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