论文标题
完成的SDSS-IV扩展的Baryon振荡光谱调查：宇宙学在Apache Point天文台的光谱调查中产生的宇宙学含义
The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
论文作者
论文摘要
我们介绍了使用星系，类星体和Ly $α$森林的最终测量的宇宙学意义，该森林从完整的Sloan Digital Sky Survey（SDSS）谱系中实验了大规模结构。这些实验由来自SDSS，SDSS-II，BOSS和EBOSS的数据组成，提供了对BARYON声学振荡（BAO）的独立测量，该测量是对角直径距离和Hubble距离的测量，相对于声音地平线，相对于$ r_d $，来自八个不同的示例的$ r_d $，以及从八个不同的示例和六个测量范围的增长率参数，$ f的增长率参数，$fσ_8$ f的速度，$ f的速度，$fσ_8。该复合样本是同类产品的最大约束，使我们能够对宇宙学模型进行全面评估，经过二十年的专用光谱观察。我们表明，仅BAO数据就可以在超过八个标准偏差的情况下排除无黑能模型，以扩展到平坦的$λ$ CDM模型，该模型允许弯曲。当与Planck宇宙微波背景（CMB）测量温度和极化相结合时，BAO数据几乎可以改善曲率约束的数量级。 RSD测量结果表明增长率与普朗克原始数据的预测以及一般相对论一致。当将SDSS BAO和RSD的结果与外部数据相结合时，所有多参数扩展名与$λ$ CDM模型保持一致。无论宇宙学模型如何，$ω_λ$，$ H_0 $和$σ_8$的精度仍为大约1 \％，显示模型之间的中心值的变化小于0.6 \％。 O $ W_0W_A $ CDM下的反距离梯子测量$ H_0 = 68.20 \ pm 0.81 \，\ rm km \，s^{ - 1} mpc^{ - 1} $，并保持紧张，并具有多种直接确定方法。 （简略）
We present the cosmological implications from final measurements of clustering using galaxies, quasars, and Ly$α$ forests from the completed Sloan Digital Sky Survey (SDSS) lineage of experiments in large-scale structure. These experiments, composed of data from SDSS, SDSS-II, BOSS, and eBOSS, offer independent measurements of baryon acoustic oscillation (BAO) measurements of angular-diameter distances and Hubble distances relative to the sound horizon, $r_d$, from eight different samples and six measurements of the growth rate parameter, $fσ_8$, from redshift-space distortions (RSD). This composite sample is the most constraining of its kind and allows us to perform a comprehensive assessment of the cosmological model after two decades of dedicated spectroscopic observation. We show that the BAO data alone are able to rule out dark-energy-free models at more than eight standard deviations in an extension to the flat, $Λ$CDM model that allows for curvature. When combined with Planck Cosmic Microwave Background (CMB) measurements of temperature and polarization the BAO data provide nearly an order of magnitude improvement on curvature constraints. The RSD measurements indicate a growth rate that is consistent with predictions from Planck primary data and with General Relativity. When combining the results of SDSS BAO and RSD with external data, all multiple-parameter extensions remain consistent with a $Λ$CDM model. Regardless of cosmological model, the precision on $Ω_Λ$, $H_0$, and $σ_8$, remains at roughly 1\%, showing changes of less than 0.6\% in the central values between models. The inverse distance ladder measurement under a o$w_0w_a$CDM yields $H_0= 68.20 \pm 0.81 \, \rm km\, s^{-1} Mpc^{-1}$, remaining in tension with several direct determination methods. (abridged)
