Early warning of precessing neutron-star black-hole binary mergers with the near-future gravitational-wave detectors. (arXiv:2107.12531v3 [gr-qc] UPDATED)
<a href="http://arxiv.org/find/gr-qc/1/au:+Tsutsui_T/0/1/0/all/0/1">Takuya Tsutsui</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Nishizawa_A/0/1/0/all/0/1">Atsushi Nishizawa</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Morisaki_S/0/1/0/all/0/1">Soichiro Morisaki</a>
Since gravitational and electromagnetic waves from a compact binary
coalescence carry independent information about the source, the joint
observation is important for understanding the physical mechanisms of the
emissions. Rapid detection and source localization of a gravitational wave
signal are crucial for the joint observation to be successful. For a signal
with a high signal-to-noise ratio, it is even possible to detect it before the
merger, which is called early warning. In this letter, we estimate the
performances of the early warning for neutron-star black-hole binaries,
considering the precession effect of a binary orbit, with the near-future
detectors such as A+, AdV+, KAGRA+, and Voyager. We find that a gravitational
wave source can be localized in $100 ,mathrm{deg^2}$ on the sky before $sim
10$–$40 ,mathrm{s}$ of time to merger once per year.
Since gravitational and electromagnetic waves from a compact binary
coalescence carry independent information about the source, the joint
observation is important for understanding the physical mechanisms of the
emissions. Rapid detection and source localization of a gravitational wave
signal are crucial for the joint observation to be successful. For a signal
with a high signal-to-noise ratio, it is even possible to detect it before the
merger, which is called early warning. In this letter, we estimate the
performances of the early warning for neutron-star black-hole binaries,
considering the precession effect of a binary orbit, with the near-future
detectors such as A+, AdV+, KAGRA+, and Voyager. We find that a gravitational
wave source can be localized in $100 ,mathrm{deg^2}$ on the sky before $sim
10$–$40 ,mathrm{s}$ of time to merger once per year.
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