用最新的VLT-KMOS HII Galerkin和全普朗克CMB谱进行宇宙学约束
Cosmological Constraints using the newest VLT-KMOS HII Galaxies and the full Planck CMB spectrum
摘要：
我们提出了新的宇宙学约束的基础上，我们的HII星系（HIIG）的哈勃关系与完整的普朗克宇宙微波背景各向异性谱和重子声学振荡（BAO）探头的联合分析。HII星系跨越一个大的红移范围$(0.088 \le z \le 2.5)$，达到显着更高的红移比现有的SNIa，因此他们探测宇宙膨胀在较早的时间。我们的独立约束比较以及与万神殿汇编的SNIa数据，我们也分析的基础上。我们发现我们的结果与共形$Λ$ CDM模型在1 $σ$内是一致的。我们还使用我们的HIIG数据检查CPL参数化，$w = w_0+w_a \frac{z}{1+z}$下的暗能量状态方程参数的行为，并找到与那些基于SNIa一致的结果，虽然在参数空间的简并以及个别参数的不确定性，边缘化一个在其他的，是相当大的。
英文摘要：
We present novel cosmological constraints based on a joint analysis of our HII galaxies (HIIG) Hubble relation with the full Planck Cosmic Microwave Background anisotropy spectrum and the Baryon Acoustic Oscillations (BAO) probes. The HII galaxies span a large redshift range $(0.088 \le z \le 2.5)$, reaching significantly higher redshifts than available SNIa and hence they probe the cosmic expansion at earlier times. Our independent constraints compare well with those based on the Pantheon compilation of SNIa data, which we also analyse. We find our results to be in agreement with the conformal $Λ$CDM model within 1$σ$. We also use our HIIG data to examine the behaviour of the dark energy equation of state parameter under the CPL parameterisation, $w = w_0+w_a \frac{z}{1+z}$, and find consistent results with those based on SNIa, although the degeneracy in the parameter space as well as the individual parameter uncertainties, when marginalizing one over the other, are quite large.
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