黑洞周围一般轨道发光环的坐标系拖曳(FD)特征

FRAME DRAGGING EFFECT OF A LUMINOUS RING IN THE GENERALIZED ORBITS AROUND A BLACK HOLE

根据Kerr度规下粒子运动的一般方程 ,计算黑洞周围一般轨道单色发光环的谱线轮廓 ,获得了坐标系拖曳 (FD)的特征 .结果表明 ,原谱线发生分裂 ,呈现具有伴峰的双主峰轮廓 ,且随参数变化峰型差异明显 ;谱线全部发生谱移 ,计算参数下谱移量为负 0 .5到 1 .5;并且 ,应用上述FD的证据 ,结合MCG 6 30 1 5实际观测结果 。

This paper describes the investigation of the observed line profiles with the frame dragging (FD) effect by a luminous monochromatic ring in the generalized orbits around a Kerr black hole (BH). The equations governing the generalized orbital trajectory of particles in the ring are used. The results indicate that not all the frequency shifted profiles of the emission lines can be demonstrated distinctly with any value of the dimensionless specific angular momentum and the inclination angle. All the lines exhibiting -0.5—1.5 redshifts have broad and significantly asymmetric double peaked profiles. Finally, discussions on the information of BHs acquired from FD profiles are presented.