Cosmology with fast radio bursts in the era of SKA  

作　　者：Ji-Guo Zhang Ze-Wei Zhao Yichao Li Jing-Fei Zhang Di Li Xin Zhang 

机构地区：[1]Department of Physics,College of Sciences,Northeastern University,Shenyang 110819,China [2]Key Laboratory of Cosmology and Astrophysics(Liaoning),Northeastern University,Shenyang 110819,China [3]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]Research Center for Intelligent Computing Platforms,Zhejiang Laboratory,Hangzhou 311100,China [6]National Frontiers Science Center for Industrial Intelligence and Systems Optimization,Northeastern University,Shenyang 110819,China [7]Key Laboratory of Data Analytics and Optimization for Smart Industry(Ministry of Education),Northeastern University,Shenyang 110819,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2023年第12期37-55,共19页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National SKA Program of China(Grant Nos.2022SKA0110200;2022SKA0110203);the National Natural Science Foundation of China(Grant Nos.11975072,11835009,11875102,and 11988101);the National 111 Project of China(Grant No.B16009)。

摘　　要：We present a forecast of the cosmological parameter estimation using fast radio bursts(FRBs)from the upcoming Square Kilometre Array(SKA),focusing on the issues of dark energy,the Hubble constant,and baryon density.We simulate 105and 106localized FRBs from a 10-year SKA observation,and find that:(1)using 106FRB data alone can tightly constrain dark-energy equation of state parameters better than CMB+BAO+SNe,providing an independent cosmological probe to explore dark energy;(2)combining the FRB data with gravitational-wave standard siren data from 10-year observation with the Einstein Telescope,the Hubble constant can be constrained to a sub-percent level,serving as a powerful low-redshift probe;(3)using 106FRB data can constrain the baryon density?bh to a precision of~0.1%.Our results indicate that SKA-era FRBs will provide precise cosmological measurements to shed light on both dark energy and the missing baryon problem,and help resolve the Hubble tension.

关 键 词：fast radio burst COSMOLOGY dark energy the Hubble constant baryon density Square Kilometre Array 

分 类 号：P159[天文地球—天文学]