Exploring Realistic Nanohertz Gravitational-wave Backgrounds
Exploring Realistic Nanohertz Gravitational-wave Backgrounds
Abstract Hundreds of millions of supermassive black hole binaries are expected to contribute to the gravitational-wave signal in the nanohertz frequency band. Their signal is often approximated either as an isotropic Gaussian stochastic background with a power-law spectrum or as an individual source corresponding to the brightest binary. In reality, …