标题： 克尔-纽曼记忆效应 显示英文标题

标题： Kerr--Newman Memory Effect

摘要： 我们通过零角动量、类光测地线将Kerr--Newman时空引入Bondi--Sachs规范。 我们计算由瞬时引力冲击波在黑洞视界上产生的记忆效应，从未来类光无限远处看，这表现为Bondi-Metzner-Sachs超平移。 这导致了由黑洞定义的时空几何在冲击波散射前后在无限远处的超平移电荷发生变化。 对于极端Kerr--Newman黑洞，我们给出了在接近视界极限下该过程的补充描述，这是由悬停在视界上的观察者所看到的。 在此极限下，我们计算了超平移电荷，并将其与在类光无限远处计算的结果进行比较。 我们分析了这些变换对电磁规范场的影响，并探讨了其与黑洞角动量之间的自相互作用。 显示英文摘要

摘要： We bring the Kerr--Newman spacetime into the Bondi--Sachs gauge by means of zero angular momentum, null geodesics. We compute the memory effect produced at the black hole horizon by a transient gravitational shock wave, which from future null infinity is seen as a Bondi-Metzner-Sachs supertranslation. This results in a change of the supertransformation charges at infinity between the spacetime geometries defined by the black hole before, and after, the shockwave scattering. For an extremal Kerr--Newman black hole, we give the complementary description of this process in the near-horizon limit, as seen by an observer hovering over the horizon. In this limit, we compute the supertranformation charges and compare them to those calculated at null infinity. We analyze the effect of these transformations on the electromagnetic gauge field and explore the self-interaction between this and the angular momentum of the black hole.