Speaker
Dr
然 丁
(安徽大学)
Description
Significant evidence for a gravitational-wave background has recently been reported by several Pulsar Timing Array (PTA) observations. In this work, we discuss the anisotropies in the Cosmological Gravitational-Wave Background (CGWB) in a model-independent way, taking the Nanograv 15-year data set as a benchmark. We present the computation of the angular power spectra of CGWB and their cross-correlation with Cosmic Microwave Background (CMB) fluctuations and gravitational lensing. This procedure is applied to signals induced by different early universe processes and is potentially useful for extracting information about CGWB anisotropies from future space-based interferometers and astrometric measurements.
Primary author
Dr
然 丁
(安徽大学)
