摘要
We study the prospects of using the low-redshift and high-redshift black hole shadows as new cosmological standard rulers for measuring cosmological parameters.We show that,using the low-redshift observation of the black hole shadow of M87?,the Hubble constant can be independently determined with a precision of about 13%as H0=70±9 km s?1 Mpc?1.The high-redshift observations of super-massive black hole shadows may accurately determine a combination of parameters H0 andΩm,and we show by a simple simulation that combining them with the type Ia supernovae observations would give precise measurements of the cosmological parameters.
作者
Jing-Zhao Qi
Xin Zhang
祁景钊;张鑫(Department of Physics,College of Sciences,Northeastern University,Shenyang 110819,China;Ministry of Education’s Key Laboratory of Data Analytics and Optimization for Smart Industry,Northeastern University,Shenyang 110819,China;Center for High Energy Physics,Peking University,Beijing 100080,China;Center for Gravitation and Cosmology,Yangzhou University,Yangzhou 225009,China)
基金
Supported by the National Natural Science Foundation of China (11975072,11835009,11690021)
the National Program for Support of Top-Notch Young Professionals
the Liaoning Revitalization Talents Program (XLYC1905011)
the Fundamental Research Funds for the Central Universities (N180503014).
