Forecast constraints on anisotropic stress in dark energy using gravitational waves

被引：10
作者：
Yang, Weiqiang [1 ]
Pan, Supriya [2 ]
Mota, David F. [3 ]
Du, Minghui [4 ]
机构：
[1] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China
[2] Presidency Univ, Dept Math, 86-1 Coll St, Kolkata 700073, India
[3] Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway
[4] Dalian Univ Technol, Sch Phys, Inst Theoret Phys, Dalian 116024, Peoples R China
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 497卷 / 01期
基金：
中国国家自然科学基金;
关键词：
cosmological parameters; dark energy; dark matter; large-scale structure of Universe; MODIFIED GRAVITY; MATTER; QUINTESSENCE; COSMOLOGY; FIELD; MODEL; TIME;
D O I：
10.1093/mnras/staa1859
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
It is always interesting to investigate how well can a future experiment perform with respect to others (present or future ones). Cosmology is really an exciting field where a lot of puzzles are still unknown. In this paper, we consider a generalized dark energy (DE) scenario where anisotropic stress is present. We constrain this generalized cosmic scenario with an aim to investigate how gravitational waves standard sirens (GWSS) may constrain the anisotropic stress, which, according to the standard cosmological probes, remains unconstrained. In order to do this, we generate the luminosity distance measurements from O(10(3)) mock GW events that match the expected sensitivity of the Einstein Telescope. Our analyses report that, first of all, GWSS can give better constraints on various cosmological parameters compared to the usual cosmological probes, but the viscous sound speed appearing due to the DE anisotropic stress is totally unconstrained even after the inclusion of GWSS.
引用
收藏
页码：879 / 893
页数：15
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