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arXiv 1802.00836gr-qc
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吸入带电的黑洞

Inspirals into a charged black hole

Ruomin Zhu, Thomas Osburn

摘要:

我们将一个致密物体的准圆内旋模型化为一个更大质量的带电黑洞。极端和中间质量比的吸气被认为是通过一个小的质量比近似。用Reissner-Nordstr $\ddot{\text{o}}$ m时空描述带电黑洞。辐射反应对较小物体的影响通过求解爱因斯坦和麦克斯韦方程组计算电磁和引力能通量来量化。通过使轨道能量衰减率与辐射能量耗散率相匹配来确定螺旋轨道。我们观察到,进入带电黑洞的螺旋比进入中性黑洞的螺旋演化得更快。通过对各种内旋结构的分析,我们得出结论:当电荷超过阈值$|Q|/M \gtrsim 0.071 \sqrtε$(其中$ε$为质量比)时,电荷是影响引力波观测的一个重要效应。

英文摘要:

We model the quasicircular inspiral of a compact object into a more massive charged black hole. Extreme and intermediate mass-ratio inspirals are considered through a small mass-ratio approximation. Reissner-Nordstr$\ddot{\text{o}}$m spacetime is used to describe the charged black hole. The effect of radiation reaction on the smaller body is quantified through calculation of electromagnetic and gravitational energy fluxes via solution of Einstein's and Maxwell's equations. Inspiral trajectories are determined by matching the orbital energy decay rate to the rate of radiative energy dissipation. We observe that inspirals into a charged black hole evolve more rapidly than comparable inspirals into a neutral black hole. Through analysis of a variety of inspiral configurations, we conclude that electric charge is an important effect concerning gravitational wave observations when the charge exceeds the threshold $|Q|/M \gtrsim 0.071 \sqrtε$, where $ε$ is the mass ratio.

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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