Testing X-ray measurements of galaxy cluster gas mass fraction using the cosmic distance-duality relation
文献类型：期刊论文
| 作者 | Wang, X ; Meng, XL ; Huang, YF ; Zhang, TJ |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2013 |
| 卷号 | 13期号:9页码:1013-1024 |
| 关键词 | HUBBLE-SPACE-TELESCOPE COSMOLOGICAL PARAMETERS DARK-ENERGY BARYON FRACTION IA SUPERNOVAE CONSTRAINTS CONSTANT SAMPLE SIMULATIONS EVOLUTION |
| ISSN号 | 1674-4527 |
| 通讯作者 | Wang, X (reprint author), Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China. |
| 英文摘要 | We propose a consistency test for some recent X-ray gas mass fraction (f(gas)) measurements in galaxy clusters, using the cosmic distance-duality relation, eta(theory) = D-L (1 + z)(-2)/D-A, with luminosity distance (D-L) data from the Union2 compilation of type Ia supernovae. We set eta(theory) equivalent to 1, instead of assigning any red-shift parameterizations to it, and constrain the cosmological information preferred by f(gas) data along with supernova observations. We adopt a new binning method in the reduction of the Union2 data, in order to minimize the statistical errors. Four data sets of X-ray gas mass fraction, which are reported by Allen et al. (two samples), LaRoque et al. and Ettori et al., are analyzed in detail in the context of two theoretical models of f(gas). The results from the analysis of Allen et al.'s samples demonstrate the feasibility of our method. It is found that the preferred cosmology by LaRoque et al.'s sample is consistent with its reference cosmology within the 1 sigma confidence level. However, for Ettori et al.'s f(gas) sample, the inconsistency can reach more than a 3 sigma confidence level and this dataset shows special preference to an Omega(Delta) = 0 cosmology. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | National Basic Research Program of China (973 program) [2009CB824800, 2012CB821804]; National Natural Science Foundation of China [11033002, 11173006]; Fundamental Research Funds for the Central Universities |
| 原文出处 | http://dx.doi.org/10.1088/1674-4527/13/9/001 |
| 语种 | 英语 |
| WOS记录号 | WOS:000323757800001 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15289]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Wang, X,Meng, XL,Huang, YF,et al. Testing X-ray measurements of galaxy cluster gas mass fraction using the cosmic distance-duality relation[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(9):1013-1024. |
| APA | Wang, X,Meng, XL,Huang, YF,&Zhang, TJ.(2013).Testing X-ray measurements of galaxy cluster gas mass fraction using the cosmic distance-duality relation.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(9),1013-1024. |
| MLA | Wang, X,et al."Testing X-ray measurements of galaxy cluster gas mass fraction using the cosmic distance-duality relation".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.9(2013):1013-1024. |
入库方式： OAI收割
来源：理论物理研究所
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