Hydro and Stellar-Dynamical Processes in Dense Stellar Systems

这个由Ostriker博士指导的理论研究项目的目标是阐明活动和静止星系核中发生的物理过程。虽然人们普遍认为，一个合适的模型将包括一个密集的恒星系统，很可能包括一个气态盘和一个或多个大质量黑洞，但实现巨大能量输出的详细机制仍然知之甚少。这项研究的重点不是黑洞附近的电动力学或相对论动力学，而是密集恒星系统中的物理环境。将研究三个相关领域：(1)含时吸积流的流体力学；(2)致密恒星系统的演化；(3)前两个学科的结合，即包含吸积流和致密恒星系统的物理过程。***

ABSTRACT AST-9424416 Ostriker, Jeremiah P. This theoretical research project, directed by Dr. Ostriker, has the objective of elucidating the physical processes occurring in active and quiescent galactic nuclei. While there is general agreement that a proper model will include a dense stellar system and in all likelihood a gaseous disc and one or more massive black holes, the detailed mechanism whereby the prodigious energy output is achieved remains poorly understood. The focus of this research is not on the electrodynamics or relativistic dynamics in the vicinity of a black hole, but on the physical environment in dense stellar systems. Three related areas will be studied: (1) hydrodynamics of time-dependent accretion flows; (2) evolution of dense stellar systems; and (3) the union of the previous two subjects, i.e. physical processes in systems containing both accretion flows and dense stellar systems. ***