论文标题
薄的积聚磁盘光度及其图像围绕完美的液体暗物质旋转的黑孔旋转
Thin accretion disk luminosity and its image around rotating black holes in perfect fluid dark matter
论文作者
论文摘要
由于宇宙以暗物质和暗能量为主的事实，我们认为旋转黑洞被完美的液体暗物质包围，并研究了这种黑洞周围薄磁盘中的积聚过程。在这里，我们对暗物质的存在如何影响从薄积聚盘发出的电磁辐射的性质感兴趣。为此，我们使用Novikov-Thorne模型，并在完美的流体暗物质中获得旋转黑孔周围的积聚磁盘的电磁光谱，并与一般相对论的情况进行比较。结果表明，对于我们在此处考虑的暗物质参数的少量值，最内向的圆形轨道的大小将减小，从而增加积聚磁盘的电磁光谱。因此，在存在完美的深色物质的情况下，磁盘比一般相对论更热，更发光。最后，我们使用数值射线追踪技术在这些黑洞周围构建薄积分盘图像。我们表明，倾斜角对图像具有显着影响，而暗物质参数的效果很小。
Motivated by the fact that the universe is dominated by dark matter and dark energy, we consider rotating black holes surrounded by perfect fluid dark matter and study the accretion process in thin disk around such black holes. Here, we are interested in how the presence of dark matter affects the properties of the electromagnetic radiation emitted from a thin accretion disk. For this purpose, we use the Novikov-Thorne model and obtain the electromagnetic spectrum of an accretion disk around a rotating black hole in perfect fluid dark matter and compare with the general relativistic case. The results indicate that for small values of dark matter parameter we considered here, the size of the innermost stable circular orbits would decrease and thus the electromagnetic spectrum of the accretion disk increases. Therefore, disks in the presence of perfect fluid dark matter are hotter and more luminous than in general relativity. Finally, we construct thin accretion disk images around these black holes using the numerical ray-tracing technique. We show that the inclination angle has a remarkable effect on the images, while the effect of dark matter parameter is small.
