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The energy exchange between different masses in an expanding gravitating system
Zhou Y(周原)1,2; Miyama, SM1
会议录名称Proceedings of IAU Symposium - DYNAMICAL EVOLUTION OF STAR CLUSTERS - CONFRONTATION OF THEORY AND OBSERVATIONS
1996
期号174
页码387-388
会议录编者/会议主办者Hut, P; Makino, J
产权排序第2完成单位
收录类别SCI ; CPCI
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
会议赞助商Int Astron Union
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.

语种英语
学科领域天文学 ; 天体物理学
学科门类理学 ; 理学::天文学
文章类型Article; Proceedings Paper
出版者KLUWER ACADEMIC PUBL
出版地PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
ISBN号0-7923-4069-8
ISSN号0074-1809
URL查看原文
WOS记录号WOS:A1996BG15G00064
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
引用统计
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7139
专题星系研究组
通讯作者Zhou Y(周原)
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
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Zhou Y,Miyama, SM. The energy exchange between different masses in an expanding gravitating system[C]//Hut, P; Makino, J. PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS:KLUWER ACADEMIC PUBL,1996:387-388.
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