A new cosmological probe using super-massive black hole shadows

被引：0
|
作者：
祁景钊 [1 ]
张鑫 [1 ,2 ,3 ,4 ]
机构：
[1] Department of Physics College of Sciences Northeastern University
[2] Ministry of Education’s Key Laboratory of Data Analytics and Optimization for Smart Industry Northeastern University
[3] Center for High Energy Physics Peking University
[4] Center for Gravitation and Cosmology Yangzhou University
来源：
Chinese Physics C | 2020年 / 05期
基金：
中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;
关键词：
black hole shadow; cosmological probe; standard ruler; cosmological parameters; the Hubble constant;
D O I：
暂无
中图分类号：
P159 [宇宙学];
学科分类号：
070401 ;
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 H;=70±9 km s;Mpc;.The high-redshift observations of super-massive black hole shadows may accurately determine a combination of parameters H;and Ω;,and we show by a simple simulation that combining them with the type Ia supernovae observations would give precise measurements of the cosmological parameters.
引用
收藏
页码：122 / 126
页数：5
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