期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 3, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2021/03/088
关键词
gravitational wave detectors; inflation; primordial gravitational waves (theory); physics of the early universe
资金
- Atraccion de Talento grant [2019-T1/TIC15784]
- JSPS KAKENHI [JP19K14718, JP20H05859]
The study explores and confirms the effectiveness of cross-correlating stochastic gravitational wave background anisotropies with CMB temperature fluctuations to establish the primordial nature of a given gravitational wave signal. It considers gravitational wave anisotropies induced by scalar-tensor-tensor primordial non-Gaussianity and calculates the expected uncertainty on the non-linearity parameter F-NL for various proposed experiments. Additionally, it calculates the theoretical, cosmic-variance-limited, error on the non-linearity parameter as a benchmark for future survey planning.
We explore and corroborate, by working out explicit examples, the effectiveness of cross-correlating stochastic gravitational wave background anisotropies with CMB temperature fluctuations as a way to establish the primordial nature of a given gravitational wave signal. We consider the case of gravitational wave anisotropies induced by scalar-tensor-tensor primordial non-Gaussianity. Our analysis spans anisotropies exhibiting different angular behaviours, including a quadrupolar dependence. We calculate the expected uncertainty on the non-linearity parameter F-NL obtained as a result of cross-correlation measurements for several proposed experiments such as the ground-based Einstein Telescope, Cosmic Explorer, and the space-based Big-Bang Observer. As a benchmark for future survey planning, we also calculate the theoretical, cosmic-variance-limited, error on the non-linearity parameter.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据