内网平台 网站地图 联系我们 English 中国科学院
首页紫台简介机构设置新闻动态科研成果研究队伍合作交流天文学院创新文化党群园地信息公开
新闻动态
图片新闻
综合新闻
天文快讯
Colloquium & 学术交流
国内外天文学术会议
紫台通讯
传媒扫描
科普动态
科研信息
台内新闻
您当前的位置:首页>新闻动态>Colloquium & 学术交流
11月25日 Experimental Detection of Gravitomagnetic Field of a Moving Mass
2010年11月22日
报告题目:Experimental Detection of Gravitomagnetic Field of a Moving Mass
报 告 人:Sergei Kopeikin 教授
        美国密苏里大学哥伦比亚分校物理学与天文学系
报告时间:2010年11月25日(星期四)下午3:00
报告地点:南京大学蒙民伟楼2402室
报告摘要:I discuss the origin of two types of gravitomagnetic field - intrinsic and extrinsic. I introduce parameterization of gravitomagnetic effects for experimental purposes. Then, I switch to calculation of the gravitational time delay caused by a moving mass in propagation of photon and prove that it is both gauge and Lorentz-invariant. I focus on the theory of the speed-of-gravity experiment of 2002 and give its theoretical interpretation based on the proposed parameterization of the gravitomagnetic effects. I shall tell some details of a new VLBA experiment with aturn of 2009. The Cassini experiment of 2003 is also critically reviewed.

Sergei Kopeikin教授简介(摘自Wikipedia)
http://en.wikipedia.org/wiki/Sergei_Kopeikin

Sergei Kopeikin (born April 10, 1956) is a USSR-born theoretical physicist presently living and working in the United States, where he holds the position of Professor of Physics at the University of Missouri in Columbia, Missouri. He specializes in the theoretical and experimental study of gravity and general relativity. He is also an expert in the field of the astronomical references frames and time metrology. His general relativistic theory of the Post-Newtonian reference frames which he had worked out along with Victor A. Brumberg, was adopted in 2000 by the resolutions of the International Astronomical Union as a standard for reduction of ground-based astronomical observation. In September 2002 he led a team which conducted a high-precision VLBI experiment to measure the fundamental speed of gravity[1]. He is also involved in studies concerning the capabilities of the Lunar Laser Ranging LLR technique to measure dynamical features of the General Theory of Relativity in the lunar motion. He has recently criticized the claims of other scientists concerning the possibility of LLR to measure the gravitomagnetic interaction [2].

Kopeikin was born in Kashin, a small town near Moscow in what was then the USSR. He graduated with excellence from Department of Astrophysics of Moscow State University in 1983 where he studied general relativity under Leonid Grishchuk presently Distinguished Research Professor of physics in Cardiff University, Wales. In 1986, he obtained a Ph.D. in relativistic astrophysics from the Space Research Institute in Moscow. His Ph.D. thesis was advised by Yakov Borisovich Zel'dovich and presented a first general-relativistic derivation of the conservative and radiation reaction forces in the Post-Newtonian expansions of the gravitational field of a binary system of two extended, massive bodies. In 1991, he obtained a Doctor of Science degree from Moscow State University and moved to Tokyo (Japan) in 1993 to teach astronomy in Hitotsubashi University. He was adjunct staff member in National Astronomical Observatory of Japan in 1993-1996 and a visiting professor in the same observatory in 1996-1997. Kopeikin moved to Germany in 1997 and worked in the Institute for Theoretical Physics of Friedrich Schiller University of Jena until 1999. He had joined Department of Physics and Astronomy of the University of Missouri in February 2000.

He has been married to Zoia Kopeikina (a daughter of Solomon Borisovich Pikelner) since 1980, and they have four daughters. Since February 2000, they have been living in Columbia, Missouri.

References
1. "Einstein proved right on gravity". BBC News. January 8, 2003.
http://news.bbc.co.uk/2/hi/science/nature/2639043.stm. Retrieved April 17, 2010. 
2. "Physicist Says Testing Technique For Gravitomagnetic Field Is Ineffective". Science Daily. June 2, 2007.
http://www.sciencedaily.com/releases/2007/06/070601104855.htm. Retrieved April 17, 2010.

地址:(210033)江苏省南京市栖霞区元化路10号  电话:86-25-83332000  传真:86-25-83332091
版权所有:中国科学院紫金山天文台 http://www.pmo.cas.cn pmoo@pmo.ac.cn 备案序号:苏ICP备05007736号