Nonlinear evolution of accretion disks induced by radiative feedback processes

摘要: The existence of accretion disks around young stellar objects has recently become widely accepted. luminosity some is highly variable and generally attributed to the release gravitational energy from matter funneled onto them by disks. inward transport through these coupled outward transfer angular momentum. This most likely be regulated mixing adjacent annuli process large-scale turbulence. Most generated this emerges near inner edge disk. radiation may intercepted disk modify vertical viscous evolution itself. If surface heating can stabilize against dominant process, then in systems with large rates, momentum mass flow will quenched. Using result, it shown that such a mechanism induce feedback which produces oscillations central object. oscillation chaotic certain regimes might thus explain nature many T Tauri their outbursting counterparts: FUmore » Orionis objects. 65 refs.« less