Hydrodynamical Processes in High Energy Astrophysics

这项计划将由世界领先的理论天体物理学家之一执行，寻求在研究大规模宇宙结构和物质注入致密天体方面开辟新的天地。它将通过实施现代基于网格的流体力学程序来实现这一点，该程序将从成功的空气动力学程序改编而来。之前的宇宙学建模工作主要是基于复杂的N体代码，这些代码虽然足以研究暗物质，但不太适合于可观察到的气体物质。将开发真正的流体力学计算方法，这些方法可以处理激波和辐射过程，并允许直接计算X射线发射、宇宙背景辐射的涨落和其他从N体方法无法获得的现象。

This program, to be carried out by one of the world's leading theoretical astrophysicists, seeks to break new ground in the study of large-scale cosmic structure, and of the infall of matter onto compact objects. It will do this by implementing modern grid-based hydrocodes, to be adapted from successful aerodynamic codes. Previous work in cosmological modeling has been based primarily on sophisticated N-body codes, which, while adequate for studying dark matter, are less well adapted to observable gaseous matter. True hydrodynamic computational methods will be developed, which can treat shocks and radiative processes, and permit the direct calculation of X-ray emission, fluctuations in the cosmic background radiation, and other phenomena not accessible from the N-body approach.