论文标题
使用Planck-CMB数据和Boss和Eboss星系的全面分析更新非标准的中微子属性
Updating non-standard neutrinos properties with Planck-CMB data and full-shape analysis of BOSS and eBOSS galaxies
论文作者
论文摘要
利用来自Planck-CMB的最新观察数据及其与前重建的完整形状（FS）星系功率谱测量的结合，来自Boss DR12样本和Eboss LRG DR16样本的测量，我们报告了宇宙中性属性的观察性约束，由扩展的$ CDM $ cdm $ cdm $ cdm $ cdm $ cdm $ cdm $ cdm +λ$ cdm +λ$ cdm +λ $ \ summ_ν$ + $ c^2 _ {\ rm eff} $ + $ + $ c^2 _ {\ rm vis} $ + $ + $ + $ + $ + $ + $ + $ + $ c $λ$ CDM + $ cdm + $ c^2 _ {\ rm $\sum m_ν$, $c^2_{\rm eff}$, $c^2_{\rm vis}$, $ξ_ν$ are the effective number of species, the total neutrino mass, the sound speed in the neutrinos rest frame, the viscosity parameter and the degeneracy parameter quantifying a cosmological leptonic asymmetry, respectively.我们观察到，与单独的CMB数据相比，FS功率谱测量与CMB数据的组合显着改善了模型的参数空间。除了标准宇宙学理论所预测的外，我们没有发现中微子特性的证据。我们最强大的观察性约束由CMB + BOSS分析给出。对于广义扩展的$λ$ CDM方案，我们发现$ C^2 _ {\ rm eff} = 0.3304^{+0.0064} _ { - 0.0075} $，$ c^2 _ {\ rm vis} = 0.037} $ n _ {\ rm eff} = 2.90 \ pm 0.15 $在68 \％cl，$ \ summ_ν<0.116 $ ev at 95 \％cl。这些是这些扩展的$λ$ CDM方案报告的最强限制。
Using the latest observational data from Planck-CMB and its combination with the pre-reconstructed full-shape (FS) galaxy power spectrum measurements from the BOSS DR12 sample and eBOSS LRG DR16 sample, we report the observational constraints on the cosmic neutrino properties given by the extended $Λ$CDM scenario: $Λ$CDM + $N_{\rm eff}$ + $\sum m_ν$ + $c^2_{\rm eff}$ + $c^2_{\rm vis}$ + $ξ_ν$, and its particular case $Λ$CDM + $c^2_{\rm eff}$ + $c^2_{\rm vis}$ + $ξ_ν$, where $N_{\rm eff}$, $\sum m_ν$, $c^2_{\rm eff}$, $c^2_{\rm vis}$, $ξ_ν$ are the effective number of species, the total neutrino mass, the sound speed in the neutrinos rest frame, the viscosity parameter and the degeneracy parameter quantifying a cosmological leptonic asymmetry, respectively. We observe that the combination of FS power spectrum measurements with the CMB data significantly improves the parametric space of the models compared to the CMB data alone case. We find no evidence for neutrinos properties other than the ones predicted by the standard cosmological theory. Our most robust observational constraints are given by CMB + BOSS analysis. For the generalized extended $Λ$CDM scenario, we find $c^2_{\rm eff}=0.3304^{+0.0064}_{-0.0075}$, $c^2_{\rm vis}=0.301^{+0.037}_{-0.033}$, $ξ_ν < 0.05$, $N_{\rm eff}=2.90 \pm 0.15$ at 68\% CL, with $\sum m_ν < 0.116$ eV at 95\% CL. These are the strongest limits ever reported for these extended $Λ$CDM scenarios.
