Early warning of precessing compact binary merger with thirdgeneration gravitationalwave detectors
Abstract
Rapid localization of gravitationalwave events is important for the success of the multimessenger observations. The forthcoming improvements and constructions of gravitationalwave detectors will enable detecting and localizing compactbinary coalescence events even before mergers, which is called early warning. The performance of early warning can be improved by considering modulation of gravitational wave signal amplitude due to the Earth's rotation and the precession of a binary orbital plane caused by the misaligned spins of compact objects. In this paper, for the first time we estimate localization precision in the early warning quantitatively, taking into account an orbital precession. We find that a neutron star—black hole binary at z =0.1 can typically be localized to 100 deg^{2} and 10 deg^{2} at the time of 1215 minutes and 50300 seconds before merger, respectively, which cannot be achieved without the precession effect.
 Publication:

Physical Review D
 Pub Date:
 September 2021
 DOI:
 10.1103/PhysRevD.104.064013
 arXiv:
 arXiv:2011.06130
 Bibcode:
 2021PhRvD.104f4013T
 Keywords:

 General Relativity and Quantum Cosmology
 EPrint:
 Phys. Rev. D 104, 064013 (2021)