Year: 2024
Type: article
Abstract: We present an efficient technique for calculating the angular two-point correlation functions (or ``overlap reduction functions'') induced by gravitational waves in both the pulse arrival times of pulsars and in the angular deflections of distant sources. In the most general case, there are six autocorrelations and cross-correlations for the pulse arrival times and the two components of the angular deflection. We provide results for spin-2 (i.e., general-relativistic) gravitational waves as well as the spin-1 modes that may arise in alternative-gravity theories. These calculations can be easily implemented for future analysis or study, and we provide code to do so.
Institutions: Johns Hopkins University, Vanderbilt University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: CAREER: Unveiling the Nanohertz GW Discovery Landscape by Broadening Participation In Multi-Messenger Astrophysics, NANOGrav Physics Frontier Center, G2652739177, WoU-MMA: Mapping the host galaxies of low-frequency gravitational-wave sources, Fundamental Interactions and Cosmology, WoU-MMA: Multi-messenger Titans: Probing The Dynamics & Environments Of Supermassive Binary Black Holes, The NANOGrav Physics Frontiers Center
OpenAlex ID: W4402640204