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arXiv 2003.08185gr-qchep-th
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在$f(R)$引力中静态黑洞周围的吸积盘

Accretion disks around a static black hole in $f(R)$ gravity

Saheb Soroushfar, Sudhaker Upadhyay

摘要:

本文描述了静态球对称黑洞在$f(R)$引力作用下的薄吸积盘。在这方面,我们首先研究了黑洞在$f(R)$引力中的视界。计算了吸积盘的运动方程和有效势,并最终得出了吸积盘最内层圆轨道的存在性。我们还导出了在圆轨道上运动的粒子的比能量、比角动量和角速度。还提出了各种参数的比较研究。指出了事件视界、宇宙视界、最内层和最外层稳定圆轨道的位置。

英文摘要:

We provide a description of a thin accretion disc for a static spherically symmetric black holes in $f(R)$ gravity. In this regard, we first study the horizons of black holes in $f(R)$ gravity. The equation of motion and effective potential are also computed which eventually leads to possible existence of innermost circular orbits of accretion disc. We derive the specific energy, specific angular momentum and angular velocity of the particles moving in circular orbits also. A comparative study of various parameters are also presented. The locations of the event horizon, cosmological horizon, innermost and outermost stable circular orbits are also pointed out.

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。

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