Shot noise in the astrophysical gravitational-wave background

Shot noise in the astrophysical gravitational-wave background
复制标题

天体物理引力波背景中的散粒噪声

DOI:
10.1103/physrevd.100.063508
复制
发表时间:
2019
期刊:
影响因子:
5
通讯作者:
M. Sakellariadou
M. Sakellariadou
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
A. Jenkins;M. Sakellariadou

文献摘要

参考文献

被引文献

相似文献

我们通过对星系分布和紧凑双星合并事件率进行有限采样来计算天体物理引力波背景各向异性引起的噪声。这种散粒噪声导致角功率谱 $C_\ell$ 中出现尺度不变的偏置项,为此我们推导了一个简单的解析表达式。我们发现,在任何合理的观测场景中,这种偏差都主导着真实的宇宙学功率谱,并且只有很长的观测时间和去除大量的前景源才能恢复真实的功率谱。
We calculate the noise induced in the anisotropies of the astrophysical gravitational-wave background by finite sampling of both the galaxy distribution and the compact binary coalescence event rate. This shot noise leads to a scale-invariant bias term in the angular power spectrum $C_\ell$, for which we derive a simple analytical expression. We find that this bias dominates over the true cosmological power spectrum in any reasonable observing scenario, and that only with very long observing times and removal of a large number of foreground sources can the true power spectrum be recovered.
DOI: 10.1103/physrevlett.106.241101
发表时间: 2011-06-15
影响因子: 8.6
作者:
Ajith, P.;Hannam, M.;Seiler, J.
通讯作者: Seiler, J.