Theoretical Investigation of the Inner Accretion Flow in Active Galactic Nuclei

活动星系黑洞内部吸积流的理论研究活动星系的中心被认为含有超大质量黑洞。围绕着这些黑洞的是物质盘，它们从银河系吸收物质，并将其送入黑洞。人们对流入这些超大质量黑洞的最内部吸积区的性质知之甚少。据推测，大部分总电力可能来自这些水源。这是广义相对论影响最大的地区。布莱斯博士正在通过两种理论方法研究内部吸积流的性质：(1)第一种方法包括对“光子-气泡”不稳定性和磁致旋转(Balbus-Hawley)不稳定性之间的相互作用进行适当的数学计算；这两种不稳定都应该存在于内部吸积流中，这两种方法都将直接控制流体的动力学和热力学性质。(2)第二种方法涉及对各种可能的几何形状进行更唯象的建模，以尝试并拟合观察到的光谱和可变性行为。

Theoretical investigation of the inner accretion flow in active galactic nulceiOmer M BlaesThe centers of active galaxies are thought to contain supermassive black holes. Surrounding these black holes are disks of matter that accrete material from the galaxy and feed it into the black hole. The nature of the innermost regions of accretion flows into these supermassive black holes is poorly understood. Most of the total power presumably originates in these sourves. This is the region where the effects of general relativity are the strongest. Dr. Blaes is investigating the properties of the inner accretion flow through two theoretical approaches: (1)The first approach consists of well posed, mathematical calculations of the interaction between the "photon-bubble" instability and the magnetorotational (Balbus-Hawley) instabilities; both of which should exists in the inner accretion flow and both of which will directly govern the dynamical and thermodynamical properties of the flow.(2) The second approach concerns a more phenomenological modeling of a variety of possible geometries to try and fit the observed spectral and variability behavior.