Observation of Gravitational Waves from the Coalescence of a 2.5?4.5Me Compact Object and a Neutron Star - Abac AG; Abbott R; Abouelfettouh I; Acernese F; Ackley K; Adhicary S; Adhikari N; Adhikari RX; Adkins VK; Agarwal D; Agathos M; Aghaei Abchouyeh M; et al. (Astrophysical Journal Letters, 2024)