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    Compact binary coalescence sensitivity estimates with injection campaigns during the LIGO-Virgo-KAGRA Collaborations’ fourth observing run

    Reed Essick1,2,3,*, Michael W. Coughlin4,5, Michael Zevin6,7,8, Deep Chatterjee9, Teagan A. Clarke10,11, Storm Colloms12, Utkarsh Mali2,1, Simona Miller13,14, Nathan Steinle15,16 et al.

    Pratyusava Baral17, Amanda C. Baylor17, Gareth Cabourn Davies18, Thomas Dent19, Prathamesh Joshi20,21,22, Praveen Kumar19, Cody Messick17, Tanmaya Mishra23, Amazigh Ouzriat24, Khun Sang Phukon25, Lorenzo Piccari26, Marion Pillas27, Max Trevor28, Thomas A. Callister29, and Maya Fishbach1,2,3

    • *Contact author: essick@cita.utoronto.ca

    Phys. Rev. D 112, 102001 – Published 4 November, 2025

    DOI: https://doi.org/10.1103/44x3-hv3y

    Abstract

    We describe the effort to characterize gravitational-wave searches and detector sensitivity to different types of compact binary coalescences during the LIGO-Virgo-KAGRA Collaborations’ fourth observing run. We discuss the design requirements and example use cases for this data product, constructed from >4.33×108 injections during O4a alone. We also identify subtle effects with high confidence, like diurnal duty cycles within detectors. This paper accompanies a public data release of the curated injection set, and the Appendixes give detailed examples of how to use the publicly available data.

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