论文标题
用标准警报器映射不均匀的宇宙：不均匀性与修改性重力理论之间的堕落
Mapping the inhomogeneous Universe with Standard Sirens: Degeneracy between inhomogeneity and modified gravity theories
论文作者
论文摘要
已建议检测引力波（GWS）和随附的电磁（E/M）对应物作为宇宙学和重力理论的未来探针。在本文中，我们介绍了源源的光度距离的计算，这些源源是在结构形成的数值模拟中预测的物质分布中的不均匀性。此外，我们表明，由于物质聚类而引起的不均匀性可以模仿某些类别的重力理论或其他抑制GW振幅的效果，并且偏差大于$δν\ sim \ sim \ sim \ sim \ simcal {o}（o}（o}（0.1）（0.1）（0.1）区分他们。对于这些，我们假设基于二进制人口综合模型的已知红移的模拟GWS来源之间的红移$ z = 0 $和$ z = 5 $。我们表明，未来的GW探测器，例如爱因斯坦望远镜或宇宙探险家，将需要对不均匀性参数进行强烈限制，并通过$ 5 \％$ $ $ $ 1 \％的$ 100 $ $ 350 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ nisottility效应和物质各向异性效果之间的堕落。
The detection of gravitational waves (GWs) and an accompanying electromagnetic (E/M) counterpart have been suggested as a future probe for cosmology and theories of gravity. In this paper, we present calculations of the luminosity distance of sources taking into account inhomogeneities in the matter distribution that are predicted in numerical simulations of structure formation. In addition, we show that inhomogeneities resulting from clustering of matter can mimic certain classes of modified gravity theories, or other effects that dampen GW amplitudes, and deviations larger than $δν\sim \mathcal{O}(0.1)\ (99\%\ \rm{C.L.})$ to the extra friction term $ν$, from zero, would be necessary to distinguish them. For these, we assume mock GWs sources, with known redshift, based on binary population synthesis models, between redshifts $z=0$ and $z=5$. We show that future GW detectors, like Einstein Telescope or Cosmic Explorer, will be needed for strong constraints on the inhomogeneity parameters and breaking the degeneracy between modified gravity effects and matter anisotropies by measuring $ν$ at $5 \%$ and $1 \%$ level with $100$ and $350$ events respectively.
