arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1801.07973gr-qchep-th
收藏

吸积对Tangherlini-Reissner-Nordstrom黑洞的约束

Constraints from accretion onto a Tangherlini-Reissner-Nordstrom black hole

Rong-Jia Yang

摘要:

利用广义相对论的$D$方法研究了任意维Tangherlini-Reissner-Nordstrom黑洞的球对称稳态绝热吸积.我们获得了吸积的基本方程,并解析地确定了临界点、临界流体速度和临界声速。重点讨论了吸积可能的条件。这个条件将质荷比限制在一个很窄的范围内,对于大尺寸,质荷比与尺寸无关。这种情况可能会挑战宇宙审查猜想的有效性,因为随着电荷的大小与黑洞的质量相比的增加,最终会产生裸奇点。

英文摘要:

We investigate spherically symmetric, steady state, adiabatic accretion onto a Tangherlini-Reissner-Nordstrom black hole in arbitrary dimensions by using $D$-dimensional general relativity. We obtain basic equations for accretion and determine analytically the critical points, the critical fluid velocity, and the critical sound speed. We lay emphasis on the condition under which the accretion is possible. This condition constrains the ratio of mass to charge in a narrow limit, which is independent of dimension for large dimension. This condition may challenge the validity of the cosmic censorship conjecture since a naked singularity is eventually produced as the magnitude of charge increases compared to the mass of black hole.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑