The energy exchange between different masses in an expanding gravitating system

	The energy exchange between different masses in an expanding gravitating system
	Zhou Y(周原)1,2 ; Miyama, SM 1
	1996
会议名称	174th Symposium of the International-Astronomical-Union on Dynamical Evolution of Star Clusters - Confrontation of Theory and Observations
会议日期	1995-08-22
会议地点	TOKYO, JAPAN
期号	174
页码	387-388
通讯作者	Zhou, Y
英文摘要	We investigate whether or not the energy exchange occurs between two species groups of particles in an expanding two-component gravitating system, and we derive the relaxation time scale for energy exchange in such a phase. This is accomplished by solving the dynamic equation coupled with Poisson's equation. We derive a characteristic time determined by the various mass and velocity ratios. When the expansion time does not exceed the characteristic time, energy exchange between the two components is possible and depends on the mass ratio. Once the characteristic time is exceeded, there is virtually no relaxation at all in system. When m(2) much greater than m(1), the transfer of energy becomes inefficient. Therefore, energy exchange between two species of particle in an expanding two-component gravitating system depends not only on the mass ratio but also on the expansion time.
收录类别	SCI ; CPCI
产权排序	第二完成单位
会议网址	http://adsabs.harvard.edu/abs/1996IAUS..174..387Z
会议录	Proceedings of IAU Symposium - DYNAMICAL EVOLUTION OF STAR CLUSTERS - CONFRONTATION OF THEORY AND OBSERVATIONS
会议录出版者	KLUWER ACADEMIC PUBL
会议录出版地	PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
学科主题	Astronomy & Astrophysics
语种	英语
ISSN号	0074-1809
ISBN号	0-7923-4069-8
WOS记录号	WOS:A1996BG15G00064
研究领域[WOS]	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
内容类型	会议论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/7139]
专题	云南天文台_星系研究组
作者单位	1.Division of Theoretical Astrophysics, National Astronomical Observatory, Mitaka 181, Tokyo, Japan 2.Yunnan Observatory, Academia Sinicai, Kunming, P. R. China
推荐引用方式 GB/T 7714	Zhou Y,Miyama, SM. The energy exchange between different masses in an expanding gravitating system[C]. 见:174th Symposium of the International-Astronomical-Union on Dynamical Evolution of Star Clusters - Confrontation of Theory and Observations. TOKYO, JAPAN. 1995-08-22.http://adsabs.harvard.edu/abs/1996IAUS..174..387Z.