标题： 轴对称情况下的物质加黑洞问题 显示英文标题

标题： The Matter Plus Black Hole Problem in Axisymmetry

摘要： 我们展示了在长期研究动态时空中的物质演化项目中的初步结果。 为了实现这一点，我们开发了一个新代码，用于演化对应于被物质场包围的黑洞的轴对称初始数据集。 该代码基于两个先前存在的代码的耦合。 物质场使用一种二维激波捕捉方法进行演化，该方法利用GR流体方程的特征信息来构建线性化黎曼求解器。 时空使用一种二维ADM代码进行演化，该代码设计用于在完整的广义相对论中演化虫洞。 我们目前正在研究的问题的一个例子是恒星与黑洞的轴对齐碰撞。 显示英文摘要

摘要： We present preliminary results in our long-term project of studying the evolution of matter in a dynamical spacetime. To achieve this, we have developed a new code to evolve axisymmetric initial data sets corresponding to a black hole surrounded by matter fields. The code is based on the coupling of two previously existing codes. The matter fields are evolved with a 2D shock-capturing method which uses the characteristic information of the GR hydro equations to build up a linearized Riemann solver. The spacetime is evolved with a 2D ADM code designed to evolve a wormhole in full general relativity. An example of the kind of problems we are currently investigating is the on axis collision of a star with a black hole.