We discuss the prospect of identifying a white dwarf binary merger by monitoring disappearance of its nearly monochromatic gravitational wave. For a ten-year operation of the laser interferometer space antenna (LISA), the chance probability of observing such an event is roughly estimated to be 20%. By simply using short-term coherent signal integrations, we might determine the merger time with an accuracy of ∼3-10 days. Also considering its expected sky localizability ∼0.1-0.01deg2, LISA might make an interesting contribution to the multi-messenger study on a merger event.
@article{arxiv.2305.09061,
title = {Identifying Disappearance of a White Dwarf Binary with LISA},
author = {Naoki Seto},
journal= {arXiv preprint arXiv:2305.09061},
year = {2023}
}