Subhalo Abundance Matching in f(R) Gravity.

Subhalo Abundance Matching in f(R) Gravity.
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f(R) 重力中的 Subhalo 丰度匹配。

DOI:
10.1103/physrevlett.117.221101
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发表时间:
2016
影响因子:
8.6
通讯作者:
He JH
He JH
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
He JH

文献摘要

被引文献

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使用Shiet等人的阈体模拟,我们提出的第一个预测星系团引力使用subhalo丰度匹配。我们发现,对于一个给定的星系密度,即使对于一个模型,其中的冷暗物质成团非常类似于具有宇宙学常数()的冷暗物质模型,模型中预测的星系成团也非常不同于。对于平均密度接近星系的样品,偏差可以高达40%。考虑到未来大规模星系巡天计划要达到的精确度,这种大的偏差是可以检验的。我们的结果表明,星系巡天可以提供一个严格的宇宙尺度上的广义相对论的测试,这是可比的本地天体物理观测的测试。
Using the liminality-body simulations of Shiet al., we present the first predictions for galaxy clustering ingravity using subhalo abundance matching. We find that, for a given galaxy density, even for anmodel with, for which the cold dark matter clustering is very similar to the cold dark matter model with a cosmological constant (), the predicted clustering of galaxies in themodel is very different from. The deviation can be as large as 40% for samples with mean densities close to that ofgalaxies. This large deviation is testable given the accuracy that future large-scale galaxy surveys aim to achieve. Our result demonstrates that galaxy surveys can provide a stringent test of general relativity on cosmological scales, which is comparable to the tests from local astrophysical observations.