https://doi.org/10.1140/epjc/s10052-024-12999-w
Regular Article - Theoretical Physics
A comprehensive forecast for cosmological parameter estimation using joint observations of gravitational waves and short 
-ray bursts
1
Key Laboratory of Cosmology and Astrophysics (Liaoning) and College of Sciences, Northeastern University, 110819, Shenyang, China
2
Key Laboratory of Data Analytics and Optimization for Smart Industry (Ministry of Education), Northeastern University, 110819, Shenyang, China
3
National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Northeastern University, 110819, Shenyang, China
c
jfzhang@mail.neu.edu.cn
d
zhangxin@mail.neu.edu.cn
Received:
12
December
2023
Accepted:
9
June
2024
Published online:
5
July
2024
In the third-generation (3G) gravitational-wave (GW) detector era, multi-messenger GW observation for binary neutron star (BNS) merger events can exert great impacts on exploring cosmic expansion history. In this work, we comprehensively explore the potential of 3G GW standard siren observations in cosmological parameter estimations by considering 3G GW detectors and the future short -ray burst (GRB) detector THESEUS-like telescope joint observations. Based on a 10-year observation of different detection strategies, we predict that the numbers of detectable GW-GRB events are 334–674 with the redshifts 
and the inclination angles 
. For the cosmological analysis, we consider the 
CDM, wCDM, 
CDM, and interacting dark energy (IDE) models. We find that GW can tightly constrain the Hubble constant with precision of 0.345–0.065%, but does not perform well in constraining other cosmological parameters. Fortunately, GW detection could effectively break the cosmological parameter degeneracies generated by the mainstream EM observations, CMB + BAO + SN (CBS). When combining mock GW data with CBS data, CBS + GW can tightly constrain the equation of state of dark energy w with a precision of 1.26%, close to the standard of precision cosmology. Meanwhile, the addition of GW to CBS could improve constraints on cosmological parameters by 34.2–94.9%. In conclusion, GW standard siren observations from 3G GW detectors could play a crucial role in helping solve the Hubble tension and probe the fundamental nature of dark energy.
© The Author(s) 2024
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