Black hole pulsar
Black hole pulsar
复制标题
DOI：
10.1103/physrevd.98.123002
复制
发表时间：
2018-08
影响因子：
5
通讯作者：
J. Levin;D. D’Orazio;S. Garcia-Saenz
中科院分区：
文献类型：
--
作者：
J. Levin;D. D’Orazio;S. Garcia-Saenz
在预期的LIGO探测黑洞/中子星星合并，我们扩大了有趣的可能性，电磁对应。黑洞/中子星星的合并可能是令人不安的黑暗，因为大多数黑洞将大到足以吞下一个中子星星整体，没有潮汐干扰，也没有随后的烟花。令人鼓舞的是，我们以前发现了一个有希望的发光源，因为黑洞和高度磁化的中子星星建立了一个电子电路-黑洞电池。在这篇文章中，我们反对一般的知识，认为黑洞的电荷是一个被忽视的电磁辐射源。依靠著名的Wald机制，一个旋转的黑洞沉浸在一个外部磁场获得一个稳定的净电荷，我们表明，强磁化的中子星星在这样的二元系统将产生足够大的电荷在黑洞中，以允许潜在的可观察到的效果。虽然最大电荷是稳定的，我们表明有一个连续的流量的电荷贡献的光度。最有趣的是，旋转的带电黑洞随后产生了自己的磁偶极子，为黑洞脉冲星提供动力。
In anticipation of a LIGO detection of a black hole/neutron star merger, we expand on the intriguing possibility of an electromagnetic counterpart. Black hole/Neutron star mergers could be disappointingly dark since most black holes will be large enough to swallow a neutron star whole, without tidal disruption and without the subsequent fireworks. Encouragingly, we previously found a promising source of luminosity since the black hole and the highly-magnetized neutron star establish an electronic circuit -- a black hole battery. In this paper, arguing against common lore, we consider the electric charge of the black hole as an overlooked source of electromagnetic radiation. Relying on the well known Wald mechanism by which a spinning black hole immersed in an external magnetic field acquires a stable net charge, we show that a strongly-magnetized neutron star in such a binary system will give rise to a large enough charge in the black hole to allow for potentially observable effects. Although the maximum charge is stable, we show there is a continuous flux of charges contributing to the luminosity. Most interestingly, the spinning charged black hole then creates its own magnetic dipole to power a black hole pulsar.