Gravitomagnetic Interaction of a Kerr Black Hole with a Magnetic Field as the Source of the Jetted GeV Radiation of Gamma-Ray Bursts
Gravitomagnetic Interaction of a Kerr Black Hole with a Magnetic Field as the Source of the Jetted GeV Radiation of Gamma-Ray Bursts
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DOI：
10.3847/1538-4357/ac5b6e
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发表时间：
2022-03
期刊：
影响因子：
--
通讯作者：
J. Rueda;R. Ruffini;R. Kerr
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文献类型：
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作者：
J. Rueda;R. Ruffini;R. Kerr
我们证明了克尔黑洞(BH)与周围磁场的重磁相互作用会在黑洞附近产生一个电场，使带电粒子加速到超相对论能量。沿着黑洞旋转轴，这些电子/质子的能量甚至可以达到几千拍电子伏特，所以长伽马射线暴(GRB)中的恒星质量黑洞和活动星系核中的超大质量黑洞可以通过这一机制为超高能宇宙射线做出贡献。在离轴纬度，粒子加速到数百亿电子伏特的能量，并以千兆电子伏特的能量发射同步辐射。这一过程发生在绕黑洞旋转轴60°范围内，由于赤道对称性，它形成了双锥体发射。我们概述了描述这些加速和辐射过程的理论框架，它们是如何提取克尔BH的转动能量的，以及对伽玛暴的天体物理的影响。
We show that the gravitomagnetic interaction of a Kerr black hole (BH) with a surrounding magnetic field induces an electric field that accelerates charged particles to ultra-relativistic energies in the vicinity of the BH. Along the BH rotation axis, these electrons/protons can reach energies of even thousands of petaelectronvolts, so stellar-mass BHs in long gamma-ray bursts (GRBs) and supermassive BHs in active galactic nuclei can contribute to the ultrahigh-energy cosmic rays thorough this mechanism. At off-axis latitudes, the particles accelerate to energies of hundreds of gigaelectronvolts and emit synchrotron radiation at gigaelectronvolt energies. This process occurs within 60° around the BH rotation axis, and due to the equatorial symmetry, it forms a double-cone emission. We outline the theoretical framework describing these acceleration and radiation processes, how they extract the rotational energy of the Kerr BH and the consequences for the astrophysics of GRBs.