We investigate observational constraints on cosmological parameters combining 15 measurements of the transversal BAO scale (obtained free of any fiducial cosmology) with Planck-CMB data to explore the parametric space of some cosmological models. We investigate how much Planck + transversal BAO data can constraint the minimum $\Lambda$CDM model, and extensions, including neutrinos mass scale $M_{\nu}$, and the possibility for a dynamical dark energy (DE) scenario. Assuming the $\Lambda$CDM cosmology, we find $H_0 = 69.23 \pm 0.50$ km s${}^{-1}$ Mpc${}^{-1}$, $M_{\nu} < 0.11$ eV and $r_{\rm drag} = 147.59 \pm 0.26$ Mpc (the sound horizon at drag epoch) from Planck + transversal BAO data. When assuming a dynamical DE cosmology, we find that the inclusion of the BAO data can indeed break the degeneracy of the DE free parameters, improving the constraints on the full parameter space significantly. We note that the model is compatible with local measurements of $H_0$ and there is no tension on $H_0$ estimates in this dynamical DE context. Also, we discuss constraints and consequences from a joint analysis with the local $H_0$ measurement from SH0ES. Finally, we perform a model-independent analysis for the deceleration parameter, $q(z)$, using only information from transversal BAO data.

中文翻译：

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使用横向 BAO 数据进行宇宙学参数分析

我们将 15 次横向 BAO 尺度测量（从任何基准宇宙学中获得）与普朗克-CMB 数据相结合，研究宇宙学参数的观测约束，以探索一些宇宙学模型的参数空间。我们研究了多少普朗克 + 横向 BAO 数据可以约束最小 $\Lambda$CDM 模型和扩展，包括中微子质量标度 $M_{\nu}$，以及动态暗能量 (DE) 情景的可能性。假设 $\Lambda$CDM 宇宙学，我们发现 $H_0 = 69.23 \pm 0.50$ km s${}^{-1}$ Mpc${}^{-1}$, $M_{\nu} < 0.11$ eV 和 $r_{\rm drag} = 147.59 \pm 0.26$ Mpc（阻力时期的声音视界）来自普朗克 + 横向 BAO 数据。当假设动态DE宇宙学时，我们发现包含BAO数据确实可以打破DE自由参数的简并性，显着改善了对全参数空间的约束。我们注意到该模型与 $H_0$ 的本地测量值兼容，并且在此动态 DE 上下文中 $H_0$ 估计值没有紧张。此外，我们还讨论了来自 SH0ES 的本地 $H_0$ 测量的联合分析的约束和后果。最后，我们仅使用来自横向 BAO 数据的信息对减速参数 $q(z)$ 进行模型独立分析。