A new cosmological probe using super-massive black hole shadows

作     者：Jing-Zhao Qi Xin Zhang 祁景钊;张鑫

作者机构：Department of PhysicsCollege of SciencesNortheastern UniversityShenyang 110819China Ministry of Education’s Key Laboratory of Data Analytics and Optimization for Smart IndustryNortheastern UniversityShenyang 110819China Center for High Energy PhysicsPeking UniversityBeijing 100080China Center for Gravitation and CosmologyYangzhou UniversityYangzhou 225009China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2020年第44卷第5期

页      面：119-123页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

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) 

主　　题：black hole shadow cosmological probe standard ruler cosmological parameters the Hubble constant 

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 *** 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?*** 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.