Dynamics of astrophysical discs through local studies of rings

对窄环形式的盘状结构的研究是由最近使用ALMA对年轻恒星周围这种结构的观测引起的。已知土星和天王星周围也存在窄环；有些受到卫星的限制，而另一些则明显没有，而且许多具有动力振荡模式。“细长环面”模型也在黑洞周围吸积盘的背景下进行了研究。对翘曲圆盘的模拟表明，它们有分离成相互倾斜的环的倾向。该项目将使用分析和计算方法来研究天体物理盘动力学的各个方面，重点是环的形成、演化和动力学。

The study of disc structures in the form of narrow rings is motivated by recent observations of such structures around young stars using ALMA. Narrow rings are also known to exist around Saturn and Uranus; some are confined by satellites but others are apparently not, and many have dynamical oscillation modes. "Slender torus" models have also been investigated in the context of accretion discs around black holes. Simulations of warped discs have shown that they have a tendency to separate into mutually inclined rings. This project will use both analytical and computational methods to study a variety of aspects of the dynamics of astrophysical discs with an emphasis on the formation, evolution and dynamics of rings.