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arXiv 1303.3307astro-ph.CO
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利用Sunyaev-Zeldovich效应和X射线数据的宇宙学

Cosmography with the Sunyaev-Zeldovich effect and X-ray data

R. F. L. Holanda, J. S. Alcaniz, J. C. Carvalho

摘要:

宇宙学提供了一种直接的方法,以独立于模型的方式映射宇宙的膨胀历史。最近,不同种类的观测已被用于宇宙学分析,如超新星Ia和伽马射线暴测量,弱和强透镜,宇宙微波背景各向异性等,在这项工作中,我们研究的前景约束宇宙学参数从当前和未来的测量星系团的距离根据其Sunyaev-Zeldovich效应(SZE)和X射线观测。通过假设当前的观测误差分布,我们进行蒙特卡罗模拟的基础上表现良好的参数化的减速参数,以生成具有不同特征的样本,并研究从即将到来的数据的宇宙学参数的确定的改进。星系团(GC)的形态上的$H_0- q_0$平面的影响进行了研究。

英文摘要:

Cosmography provides a direct method to map the expansion history of the Universe in a model-independent way. Recently, different kinds of observations have been used in cosmographic analyses, such as SNe Ia and gamma ray bursts measurements, weak and strong lensing, cosmic microwave background anisotropies, etc. In this work we examine the prospects for constraining cosmographic parameters from current and future measurements of galaxy clusters distances based on their Sunyaev-Zeldovich effect (SZE) and X-ray observations. By assuming the current observational error distribution, we perform Monte Carlo simulations based on a well-behaved parameterization for the deceleration parameter to generate samples with different characteristics and study the improvement on the determination of the cosmographic parameters from upcoming data. The influence of galaxy clusters (GC) morphologies on the $H_0- q_0$ plane is also investigated.

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。

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