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...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
American Physical Society
2024-02-01
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Series: | Physical Review Research |
Online Access: | http://doi.org/10.1103/PhysRevResearch.6.013207 |