U.S.-Germany Cooperative Research on Numerical Modelling of Accretion Disk Coronae

该奖项支持米切尔Begelman和他的研究小组在科罗拉多大学，和Ruediger Staubert和其他研究所的天文学和天体物理学的Tuebingen大学，德国之间的合作。 他们正在研究吸积盘周围热日冕发射的硬X射线成分的起源。 特别是，他们正试图通过数值分析开发一套自洽的模型，然后可以更广泛地被其他天文学家使用。 该合作计划结合了Begelman和他的研究生James Dove在建模活动星系方面的理论技能，以及Staubert教授和他的同事的数据采集和分析技能。 后者一直是世界上在X射线双星和其他系统中的高能现象的研究的领导小组之一。 美方将负责开发计算机代码和基本理论模型;这些模型将由德国小组获得的物理数据大大改进。 X射线光谱技术已经有了很大的改进，现在产生的X射线光谱数据质量足够高，可以保证详细的理论建模。 该项目汇集了两个具有互补专长的研究小组，以完成这项任务，并提高对吸积盘日冕的理解。

This award supports collaboration between Mitchell Begelman and his research group at the University of Colorado, and Ruediger Staubert and others of the Institute for Astronomy and Astrophysics of the University of Tuebingen, Germany. They are studying the origin of the hard X-ray component in emissions from hot coronae around accretion disks. In particular, they are attempting to develop a set of self-consistent models through numerical analysis which can then be used more widely by other astronomers. The collaborative plan combines the theoretical skills in modeling active galaxies possessed by Begelman and his graduate student, James Dove, with the data acquisition and analysis skills of Professor Staubert and his colleagues. The latter has been one of the leading groups in the world in the study of high energy phenomena in x-ray binaries and other systems. The U.S. side will be responsible for developing computer code and the basic theoretical models; these models will be greatly improved by the physical data obtained by the German group. The technique of x-ray spectroscopy has improved substantially, and now produces x-ray spectral data that is high enough quality to warrant detailed theoretical modeling. This project brings together two research groups with the complementary expertise to accomplish this task and improve understanding of accretion disk coronae.