Kavli Affiliate: Lijing Shao
| First 5 Authors: Yacheng Kang, Chang Liu, Lijing Shao, ,
| Summary:
We investigate the prospects of electromagnetic follow-ups for binary neutron
star (BNS) mergers, with the help of early warnings from decihertz
gravitational-wave (GW) observatories, B-DECIGO and DO-Optimal. Extending our
previous work in Liu et al. (2022), we not only give quick assessments of joint
short $gamma$-ray burst (sGRB) detection rates for different $gamma$-ray
satellites and BNS population models, but also elaborate on the analyses and
results on multi-band kilonova detections for survey telescopes with different
limiting magnitudes. During an assumed 4-year mission time for decihertz GW
observatories, we find that for the goals of electromagnetic follow-ups,
DO-Optimal performs better than B-DECIGO as a whole on the detection rate, and
has a larger detectable distance for joint sGRB/kilonova searches. Taking the
log-normal population model for BNS mergers and a $text{one-day}$
early-warning time as an example, we discuss the accuracy in localization and
timing, as well as the redshift distributions for various synergy observations
with electromagnetic facilities and decihertz GW detectors. Based on our
analyses, we propose a feasible "wait-for" pattern as a novel detecting mode
for future multi-messenger astrophysics.
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