引力透镜红移分布的宇宙学参数
摘要
对于已知的引力透镜系统,透镜的红移分布与理论预期进行比较,后者覆盖超过套弗里德曼-莱梅特里宇宙学模型,足以覆盖可能的情况。该比较用于为每个模型分配相对概率。该程序针对不同的不均匀性参数和限制性光谱 magnitudes~进行了多次重复,后者对于选择效应至关重要。对于和的特殊情况,我们更详细地考察了这两个参数的依赖性。确认了以前的结果,即该方法是~比更好的探针,但它看起来低概率的模型(即具有较大~值)是由于选择效应所致。该方法的判别力当然可以随着发现更多引力透镜系统而提高。然而,我们的数值模拟表明,观察到的合理数量的系统无法对宇宙学参数提供有趣的约束。
引用
@article{arxiv.astro-ph/9501013,
title = {Cosmological parameters and the redshift distribution of gravitational lenses},
author = {Phillip Helbig and Rainer Kayser},
journal= {arXiv preprint arXiv:astro-ph/9501013},
year = {2011}
}
备注
One self-unpacking uuencoded compressed PostScript file (created with uufiles) containing the complete text with all figures included (here 140kb gzipped, unpacked 975kb). 10 pages. Should be printable without loss on US-size paper. Paper version available on request. Changes--nothing removed, typos corrected, the following additions: one figure, one table and some text explaining the structure in the plots in more detail; more detailed explanation of the statistics used. Accepted by Astronomy and Astrophysics