Constraints on scalar-induced gravitational waves up to third order from a joint analysis of BBN, CMB, and PTA data

Constraints on scalar-induced gravitational waves up to third order from a joint analysis of BBN, CMB, and PTA data

Recently, strong evidence for a gravitational-wave background has been reported by collaborations of pulsar timing arrays (PTAs). In the framework of scalar-induced gravitational waves, we concurrently investigate the second- and third-order gravitational waves by jointly analyzing PTA data alongsid...

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Bibliographic Details
Main Authors:	Sai Wang, Zhi-Chao Zhao, Qing-Hua Zhu
Format:	Article
Language:	English
Published:	American Physical Society 2024-02-01
Series:	Physical Review Research
Online Access:	http://doi.org/10.1103/PhysRevResearch.6.013207

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