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Note on pulsar timing array correlation functions induced by peculiar velocities

Year: 2026

Type: preprint

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.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2601.08915

Authors: Kumar, Neha Anil, Inomata, Keisuke, Kamionkowski, Marc

Institution: Johns Hopkins University

Topic: Pulsars and Gravitational Waves Research

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7124284776

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