Note on pulsar timing array correlation functions induced by peculiar velocities
Cosmology and Nongalactic Astrophysics
2026-01-15 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
Several papers have recently calculated the contribution to pulsar timing array overlap reduction functions (ORFs) induced by our peculiar velocity with respect to the rest frame of the stochastic gravitational-wave background. Here we show that a harmonic-space calculation confirms the most recent result. We note that, with the harmonic-space calculation, the ORFs for spin-1 GWs and the correlations with astrometry measurements are also easily obtained.
Cite
@article{arxiv.2601.08915,
title = {Note on pulsar timing array correlation functions induced by peculiar velocities},
author = {Neha Anil Kumar and Keisuke Inomata and Marc Kamionkowski},
journal= {arXiv preprint arXiv:2601.08915},
year = {2026}
}
Comments
3 pages, 2 figures