论文标题
在Reissner-Nordström黑洞上的弗拉索夫气体积聚
Accretion of the Vlasov gas on Reissner-Nordström black holes
论文作者
论文摘要
我们研究了Reissner-Nordström黑洞上相对论Vlasov气体的固定球体对称积聚。该模型基于Rioseco和Sarbach对Schwarzschild时空的最新分析。这两种模型都有许多共同的特征：无穷大的Maxwell-Jüttner分布的气体不再在黑洞附近的热平衡中。黑洞地平线的径向压力甚至可能比切向压力小的数量级。 Reissner-Nordström模型的定量特性取决于电荷参数。对于具有固定渐近质量的黑洞，随着黑洞电荷的增加，质量积聚率降低。切向压力与地平线处的径向压力的比率也随着电荷的增加而降低。另一方面，地平线上的粒子密度（由其渐近值归一化）随黑孔电荷参数而生长。
We investigate stationary spherically symmetric accretion of the relativistic Vlasov gas on Reissner-Nordström black holes. The model is based on a recent analysis done by Rioseco and Sarbach for the Schwarzschild spacetime. Both models share many common features: The gas characterized by the Maxwell-Jüttner distribution at infinity is no longer in thermal equilibrium in the vicinity of the black hole. The radial pressure at the black-hole horizon can be even an order of magnitude smaller than the tangential pressure. Quantitative characteristics of the Reissner-Nordström model depend on the charge parameter. For black holes with fixed asymptotic mass, the mass accretion rate decreases with the increasing black-hole charge. The ratio of the tangential pressure to the radial pressure at the horizon also decreases with the increasing charge. On the other hand, the particle density at the horizon (normalized by its asymptotic value) grows with the black-hole charge parameter.
