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arXiv 1006.1950astro-ph.COgr-qchep-phhep-th
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非高斯初始条件下最大质量星系团的概率

Probability of the most massive cluster under non-Gaussian initial conditions

Laura Cayón, Christopher Gordon, Joseph Silk

摘要:

非常大质量的高红移星系团可以用来约束和检验Lambda CDM模型。考虑到Jee等人(2009)的观测限制,我们计算了在非高斯初始条件下,在(5.2-7.6)e14 M_sun范围内,红移1.4-2.2之间,天空面积为11平方度的最大质量星系团的概率。簇在比当前宇宙微波背景或晕偏置数据更小的尺度上约束非高斯性,因此可以用于测试非高斯性参数f_NL的运行。

英文摘要:

Very massive high redshift clusters can be used to constrain and test the Lambda CDM model. Taking into account the observational constraints of Jee et al. (2009) we have calculated the probability for the most massive cluster to be found in the range (5.2-7.6)e14 M_sun, between redshifts 1.4-2.2, with a sky area of 11 sqdeg and under non-Gaussian initial conditions. Clusters constrain the non-Gaussianity on smaller scales than current cosmic microwave background or halo bias data and so can be used to test for running of the non-Gaussianity parameter f_NL.

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