Horndeski带毛黑洞时空中的引力扰动
Gravitational perturbations in a Horndeski hairy black hole spacetimes
代彬彬 1奚萍1
作者信息
- 1. 上海师范大学数理学院,上海 200234
- 折叠
摘要
研究了 Horndeski带毛黑洞的引力拟正则模(QNMs).利用有限元方法,讨论了拟正则模与黑洞参数之间的关系.拟正则模的振荡频率和衰减速率都随着带毛黑洞的标量荷Q的增加而增加.而振荡频率和衰减速率随着黑洞质量M的增加而降低.当扰动的角动量l增加时,拟正则模的振荡周期减小.然而,对于不同l值,拟正则模的衰减率几乎没有变化.研究结果表明:Horndeski带毛黑洞是稳定的.
Abstract
In this paper,we investigate the gravitational quasi-normal modes(QNMs)of Horndeski hairy black holes.By using the ordinary finite element method,the relations between the QNMs and the parameters of black holes are minutely shown.Both the oscillating frequency and the decay rate increase with the increase of the scalar charge Q.While the oscillating frequency and the decay rate decrease with the black hole mass M increasing.And the quasi-period of the oscillation decreases when the angular momentum l of the perturbation field increases.However,the decay rate has barely changed for different values of l.Thus,the numerical results indicate that Horndeski black holes are stable.
关键词
Horndeski带毛黑洞/拟正则模(QNMs)/有限元方法Key words
Horndeski hairy black holes/quasi-normal modes(QNMs)/the ordinary finite element method引用本文复制引用
出版年
2024
NETL
NSTL
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