Pulsar-timing measurement of the circular polarization of the stochastic gravitational-wave background
Gabriela Sato-Polito,
Marc Kamionkowski
Abstract:Pulsar-timing arrays (PTAs) are in the near future expected to detect a stochastic gravitationalwave background (SGWB) produced by a population of inspiralling super-massive black hole binaries. In this work, we consider a background that can be anisotropic and circularly polarized. We use the expansion of the intensity and the circular polarization in terms of spherical harmonics and the overlap reduction functions for each term in this expansion.We propose an unbiased real-space estimator that can separate t… Show more
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