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

美德合作研究吸积盘日冕数值模拟

基本信息

批准号：
9513899
负责人：
Mitchell Begelman
金额：
$ 1.49万
依托单位：
University of Colorado at Boulder
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1996
资助国家：
美国
起止时间：
1996-04-01 至 2000-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9513899&HistoricalAwards=false
关键词：
U.S.Germany Cooperative Research Numerical

项目摘要

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.

该奖项支持米切尔·贝格曼（Mitchell Begelman）和他在科罗拉多大学的研究小组与德国图宾根大学天文学与天体物理学研究所的Ruediger Staubert与其他研究小组之间的合作。他们正在研究积聚磁盘周围热的冠状器排放中硬X射线成分的起源。特别是，他们试图通过数值分析来开发一组自洽模型，然后这些模型可以被其他天文学家更广泛地使用。协作计划结合了贝格曼及其研究生詹姆斯·多夫（James Dove）拥有的主动星系的理论技能，以及斯托伯特教授及其同事的数据获取和分析技能。后者一直是X射线二进制组和其他系统中高能量现象研究中世界上领先的群体之一。美国方面将负责制定计算机代码和基本理论模型；德国组获得的物理数据将大大改善这些模型。 X射线光谱技术的技术已大大改善，现在产生的X射线光谱数据足够高，可以保证详细的理论建模。该项目汇集了两个研究小组，并具有互补的专业知识，以完成这项任务，并提高对增生盘冠状动脉的理解。