Magnetically Driven Warping, Precession and Resonances in Accretion Disks

赖东，“吸积盘的磁驱动翘曲，进动和共振”，vol . 11 - 01。赖教授正在进行一项理论和计算研究，研究围绕吸积高重力物体（如中子星）运行的气体。特别强调的是实现对强磁场如何驱动吸积盘的翘曲，其进动和任何共振的物理理解。本文从以下几个方面探讨了这一问题：(1)实际磁场盘几何的磁力和转矩的基本计算；(2)翘曲加工盘动力学分析与数值模拟；(3)将计算模型与观测到的x射线双星的自旋演化、振荡和超轨道变异性进行比较。本项目由美国国家科学基金会恒星天文学和天体物理学项目（AST/SAA）资助

Lai, Dong"Magnetically Driven Warping, Precession and Resonances in Accretion Disks"AST-9986740Dr. Lai is conducting a theoretical and computational study of orbiting gas around accreting high gravity objects such as neutron stars. Special emphasis is placed on achieving a physical understanding of how strong magnetic fields drive the warping of an accretion disk, its precession and any resonances that develop. The problem is approached from several fronts: (1) basic calculations of the magnetic forces and torques for realistic magnetic field - disk geometry; (2) analytic and numerical modeling of the dynamics of warped precessing disks; and (3) comparison of the computed models to the observed spin evolution, oscillations and super-orbital variability of X-ray binaries.Funding for this project was provided by the NSF program for Stellar Astronomy & Astrophysics (AST/SAA).***