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

页码：122 / 126

页数：5

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