题  目：An extension of the IAU framework for reference systems

报告人：Prof. Sergey Kopeykin (University of Missouri-Columbia, USA)

摘  要: IAU-2000 resolutions on the reference frames set up a solid theoretical foundation for implementing general relativity in computer-based data processing algorithms to reach an unambiguous physical interpretation of high-precision astronomical observations. I briefly remind the content of the IAU-2000 resolutions and discuss the possible directions of their further development in order to take into account the decadal progress in observational techniques and computer technology. The particular subjects, which are addressed in more detail, are: 1) the spacetime transformations and the scaling of the metric tensor; -2) the PPN parameters and the gauge invariance of equations of motion; -3) the hierarchy of astronomical reference frames - from the solar system to cosmology.

时  间：2010年11月26日（星期五）下午3:00

地  点：（北京西路2号）紫台大楼419会议室

　　　　　　　　　　　　　　　 紫金山天文台学术委员会学术交流工作委员会
　　　　　　　　　　　　　　　　　　　　　　　　　　　　  2010年11月15日