Testing the distance-duality relation with data from galaxy clusters and type Ia supernovae

被引：0
|
作者：
Fu, Xiang-Yun [1 ]
Wu, Pu-Xun [2 ,3 ]
Yu, Hong-Wei [4 ,5 ]
Li, Zheng-Xiang [4 ,5 ]
机构：
[1] Hunan Univ Sci & Technol, Inst Phys, Xiangtan 411201, Peoples R China
[2] Ningbo Univ, Ctr Nonlinear Sci, Ningbo 315211, Zhejiang, Peoples R China
[3] Ningbo Univ, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China
[4] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China
[5] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Minist Educ, Changsha 410081, Hunan, Peoples R China
来源：
RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2011年 / 11卷 / 08期
基金：
中国国家自然科学基金;
关键词：
galaxies: distances and redshifts; galaxies: clusters: general; supernovae: general; EXPANSION HISTORY; DARK ENERGY; CONSTRAINTS; DEFINITION; UNIVERSE; SCALE; GAS;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We test the distance-duality (DD) relation by combining the angular diameter distance D-A provided by two galaxy cluster samples compiled by De Filippis et al. (the elliptical beta model) and Bonamente et al. (the spherical beta model), and the luminosity distance D-L from Constitution and Union2 type Ia supernova (SNe Ia) datasets. To obtain D-L associated with the observed DA at the same redshift, we smooth the noise of the SNe Ia in a model-independent way, obtain the evolutionary curve of D-L and, finally, test the DD relation. We find that the elliptical beta model, when compared with the SNe la from the Constitution compilation, is only consistent with the DD relation at the 3 sigma confidence level (CL), while the spherical beta model is incompatible with the DD relation at the 3 sigma CL. For the Union2 compilation, the De Filippis and Bonamente samples are marginally compatible with the validity of the DD relation at the 1 sigma and 2 sigma CLs, respectively.
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页码：895 / 901
页数：7
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