论文标题
临时轨道在加速黑洞周围
Timelike orbits around accelerating black holes
论文作者
论文摘要
我们研究加速施瓦茨柴尔德黑洞周围的大量颗粒的大地测量学。我们表明，最内向稳定的圆形轨道的半径增加，该轨道处的颗粒角动量通过增加加速度降低。除了定量影响外，加速度还定性地改变了物理学。我们表明，在加速黑洞时空时，在扁平，de Sitter和Anti de Sitter背景中存在最外层稳定的圆形轨道。对径向测量学的研究表明，加速度像排斥力一样，在某种意义上，围绕加速黑洞的测试粒子可以向外移动，除非背景中存在巨大的宇宙学常数，以补偿排斥力。我们还调查了围绕加速黑洞的轨道围巾的动力。与非加速案例相比，进动将更大。还表明，抗De Sitter背景中的进动可能与粒子运动相反。
We study the geodesics of massive particles around accelerating Schwarzschild black hole. We show that the radius of the innermost stable circular orbit increases and the angular momentum of particle at this orbit decreases by increasing the acceleration. Apart from quantitative influence, the acceleration qualitatively changes the physics. We show that in accelerating black hole spacetime there exist an outermost stable circular orbit in flat, de Sitter, and anti de Sitter background. Investigations of radial geodesics show that the acceleration acts like a repulsive force in the sense that test particles around accelerating black holes can move radially outward, unless there exist a large negative value of cosmological constant in the background to compensate the repulsive force. We also investigate the precession of perihelion of orbits around accelerating black holes. The precession would be larger compared to the non-accelerating case. It is also shown that the precession in anti de Sitter background could be opposite to the particle motion.
