旋转黑洞周围相对论性吸积盘中的有效声速
高能天体物理现象
2022-11-04 v3 广义相对论与量子宇宙学
摘要
对于在Kerr度规下沿垂直方向维持流体静力平衡的轴对称吸积，径向马赫数在临界点处不会变为1。因此，声点形成于与临界点不同的径向距离处。我们提出，可通过描述上述吸积流结构的全时空依赖方程的线性扰动来定义一种修正的动力学声速。此类流体方程的线性稳定性分析导出一个描述线性声学扰动传播的波动方程。这种扰动传播的速度可用作有效声速，其在临界点处求值时使马赫数的值为1。这使得临界点与声点重合。我们研究了黑洞的自旋角动量（Kerr参数）如何影响有效声速的值。
引用
@article{arxiv.1811.04975,
title = {Effective sound speed in relativistic accretion discs around rotating black holes},
author = {Susovan Maity and Md Arif Shaikh and Tapas Kumar Das},
journal= {arXiv preprint arXiv:1811.04975},
year = {2022}
}
备注
Due to findings in another work, the work in this literature has been immensely modified. The final version is now substantially different from this manuscript and thus this manuscript is no more scientifically significant and consistent. Thus withdrawal of this paper would be appropriate