宇宙动力学:标准蜡烛、标尺和宇宙钟的联合分析
Cosmokinetics: A joint analysis of Standard Candles, Rulers and Cosmic Clocks
摘要:
我们用运动学方法研究宇宙的加速膨胀。在这种情况下,我们以模型无关的方式参数化减速参数q(z)。假设三个简单的参数化,我们重建q(z)。我们结合最新的宇宙学数据进行了联合分析,这些数据包括标准烛光(超新星联盟2样本)、标准标尺(CMB/BAO)、宇宙钟(被动演化星系的年龄)和哈勃(H(z))数据。我们的结果支持宇宙加速膨胀。
英文摘要:
We study the accelerated expansion of the universe by using the kinematic approach. In this context, we parameterize the deceleration parameter, q(z), in a model independent way. Assuming three simple parameterizations we reconstruct q(z). We do the joint analysis with combination of latest cosmological data consisting of standard candles (Supernovae Union2 sample), standard ruler (CMB/BAO), cosmic clocks (age of passively evolving galaxies) and Hubble (H(z)) data. Our results support the accelerated expansion of the universe.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。