The ground-based gravitational wave (GW) observatories discover a population of merging stellar binary black holes (BBHs), which are promising targets for multiband observations by the low-, middle-, and high-frequency GW detectors. We investigate the multiband GW detections of BBHs and demonstrate the advantages of such observations in improving the localization and parameter estimates of the sources. The multiband observations by the low-frequency detectors （LISA and Taiji）and AMIGO may detect 5–33 BBHs with SNR ≥ 5 for both low-frequency and middle-frequency detectors, which can evolve to the high-frequency band within 4 yr and can be detected by the Cosmic Explorer (CE) and Einstein Telescope (ET). The joint observations of LISA-Taiji-AMIGO-ET-CE may improve the sky localization estimations for the detectable BBHs by a factor of ∼120, ∼2.4 × 105, ∼1.8 × 104, or ∼1.2 × 104, comparing with those by only adopting CE-ET, AMIGO, LISA-Taiji, or LISA-Taiji-AMIGO.
These joint observations can also lead to an improvement of the measurement precision of the chirp mass (symmetric mass ratio) by a factor of ∼5.5 × 104 (33), ∼16 (8), ∼120 (90), or ∼5 (5), comparing with those by CE-ET, AMIGO, LISA-Taiji, or LISA-Taiji-AMIGO.
https://ui.adsabs.harvard.edu/abs/2023MNRAS.522.2951Z/abstract
BIO
My research interests mainly focus on gravitational wave astrophysics including the compact binary systems, gravitaional wave background and GW multiband observations.
2023-present: postdoc, BNU
2015-2023: PhD, NAOC. supervisor: Youjun, Lu
