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arXiv 2402.08402astro-ph.HEgr-qc
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Loop量子黑洞中增强的Blandford-Znajek喷流

Enhanced Blandford Znajek Jet in Loop Quantum Black Hole

Hong-Xuan Jiang, Indu K. Dihingia, Cheng Liu, Yosuke Mizuno, Tao Zhu

AI总结:

本文通过二维与三维双温度GRMHD模拟研究旋转Loop量子黑洞的磁化吸积,发现量子效应增强参考系拖曳与环向磁场,从而提升BZ喷流功率,并使GRRT喷流图像更宽、更延展。

摘要:

Blandford-Znajek(BZ)过程通过提取Kerr黑洞的旋转能量来为高能喷流提供动力。理解这一过程在非Kerr黑洞时空中的表现非常重要。在本研究中,我们对围绕旋转Loop量子黑洞(LQBH)的磁化吸积流进行了二维和三维双温度广义相对论磁流体动力学(GRMHD)模拟。我们的研究重点关注模拟得到的吸积流结构和喷流发射动力学。我们观察到,对于旋转黑洞,Loop量子效应提高了黑洞角频率。这一现象增强了参考系拖曳效应,导致漏斗区域内的环向磁场放大,并提升了发射喷流的功率。喷流功率可以采用与Kerr黑洞中类似的黑洞角频率拟合公式来拟合。基于广义相对论辐射转移(GRRT)计算,我们发现LQBH产生的喷流图像相比Kerr BH具有更宽的张角和更延展的结构。

英文摘要:

The Blandford-Znajek (BZ) process powers energetic jets by extracting the rotating energy of a Kerr black hole. It is important to understand this process in non-Kerr black hole spacetimes. In this study, we conduct two-dimensional and three-dimensional two-temperature General Relativistic Magnetohydrodynamic (GRMHD) simulations of magnetized accretion flows onto a rotating Loop-Quantum black hole (LQBH). Our investigation focuses on the accretion flow structure and jet launching dynamics from our simulations. We observe that the loop quantum effects increase the black hole angular frequency for spinning black holes.This phenomenon intensifies the frame-dragging effect, leading to an amplification of the toroidal magnetic field within the funnel region and enhancement of the launching jet power. It is possible to fit the jet power following a similar fitting formula of the black hole angular frequency as seen in the Kerr black hole. Based on the General Relativistic Radiation Transfer (GRRT) calculation, we find that the jet image from LQBH has a wider opening angle and an extended structure than the Kerr BH.

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