Warp and eccentricity propagation in discs around black holes
Warp and eccentricity propagation in discs around black holes
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黑洞周围圆盘中的扭曲和偏心率传播
DOI：
10.1111/j.1365-2966.2008.14070.x
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发表时间：
2008
影响因子：
4.8
通讯作者：
G. Ogilvie
中科院分区：
文献类型：
--
作者：
Barbara T. Ferreira;G. Ogilvie
我们考虑了在各种条件下黑洞周围圆盘中翘曲和偏心扰动的向内传播。在我们的计算中，我们使用长期理论的翘曲和偏心盘，并假设变形是固定的，并在一个类似于区域（a）和（B）的Shakura和Sunyaev盘的盘模型中传播。我们发现，传播的变形的最里面的区域的光盘是有利于低粘性阻尼和高吸积率。我们将我们的结果与可能的激发被困惯性模式，并在黑洞系统中的甚高谱态的高频准周期振荡（QPO）的观察。
We consider the inward propagation of warping and eccentric disturbances in discs around black holes under a wide variety of conditions. In our calculations, we use secular theories of warped and eccentric discs and assume the deformations to be stationary and propagating in a disc model similar to regions (a) and (b) of Shakura & Sunyaev discs. We find that the propagation of deformations to the innermost regions of the disc is facilitated for low viscous damping and high accretion rate. We relate our results to the possible excitation of trapped inertial modes, and to the observations of high-frequency quasi-periodic oscillations (QPOs) in black hole systems in the very high spectral state.