Null geodesics, quasinormal modes, and the correspondence with shadows in high-dimensional Einstein-Yang-Mills spacetimes

被引:19
|
作者
Guo, Yang [1 ]
Miao, Yan-Gang [1 ]
机构
[1] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
基金
中国国家自然科学基金;
关键词
BLACK-HOLE;
D O I
10.1103/PhysRevD.102.084057
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Null geodesics, quasinormal modes of a massless scalar field perturbation, and the correspondence with shadow radii are investigated in the background spacetime of high-dimensional Einstein-Yang-Mills black holes. Based on the properties of null geodesics, we obtain the connection between the radius of a photon sphere and the radius of a horizon in the five- and six-dimensional Einstein-Yang-Mills spacetimes. Especially in the five-dimensional case, there exist two branches for the radius of a photon sphere, but only the branch outside the event horizon satisfies the condition of circular null geodesics. Moreover, we find no reflecting points of shadow radii and no spiral-like shapes on the complex plane of quasinormal frequencies and verify the correspondence between the quasinormal modes in the eikonal limit and shadow radii in high-dimensional Einstein-Yang-Mills spacetimes.
引用
收藏
页数:12
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