论文标题
在玻色子恒星周围气体云的运动中的潮汐效应
Tidal effects in the motion of gas clouds around boson stars
论文作者
论文摘要
我们报告了有关在两个不同的方向上绕球形对称的紧凑型玻色子星绕的潮汐破坏云的模拟。首先，我们考虑靠近玻色子恒星的三个不同绑定轨道的云，并分析了这些碎片形成的机理。我们从模拟中推断出，这些热点的寿命比偏心轨道上的云更长。接下来，我们比较玻色颗星和施瓦茨柴尔德黑洞周围圆形轨道上更延伸和密度较少的云的演变。作为模拟的结果，我们观察到玻色子恒星周围的环状结构的形成，并具有螺旋状的冲击结构和恒定的热bremsstrahlung总亮度。这种最终配置与黑洞场景形成鲜明对比，在黑洞场景中，气体被完全捕获在事件范围后面。
We report simulations regarding tidal disruption clouds orbiting spherically symmetric compact boson stars in two different regimes. First we consider clouds in three different bound orbits close to the boson star and analyze the mechanisms of debris formation for these. We infer from the simulations that the lifetimes of these hot-spots are longer for circularly orbiting clouds than for clouds on eccentric orbits. Next we compare the evolution of more extended and less dense clouds on circular orbits around a boson star and a Schwarzschild black hole. As an outcome of the simulations we observe the formation of a ring-like structure around the boson star endowed with a spiralling shock structure and a constant thermal bremsstrahlung total luminosity. This final configuration contrasts strongly with the black hole scenario where the gas is totally captured behind the event horizon.
