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The energy exchange between different masses in an expanding gravitating system
Zhou Y(周原)1,2; Miyama, SM1
Source PublicationProceedings of IAU Symposium - DYNAMICAL EVOLUTION OF STAR CLUSTERS - CONFRONTATION OF THEORY AND OBSERVATIONS
1996
Issue174
Pages387-388
Author of SourceHut, P; Makino, J
Contribution Rank第2完成单位
Indexed BySCI ; CPCI
Conference Name174th Symposium of the International-Astronomical-Union on Dynamical Evolution of Star Clusters - Confrontation of Theory and Observations
Conference Date1995-08-22
Conference PlaceTOKYO, JAPAN
Conference SponsorInt Astron Union
Abstract

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.

Funding OrganizationN/A
Language英语
Subject Area天文学 ; 天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle; Proceedings Paper
PublisherKLUWER ACADEMIC PUBL
Publication PlacePO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
ISBN0-7923-4069-8
ISSN0074-1809
URL查看原文
WOS IDWOS:A1996BG15G00064
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
Citation statistics
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7139
Collection星系研究组
Corresponding AuthorZhou Y(周原)
Affiliation1.Division of Theoretical Astrophysics, National Astronomical Observatory, Mitaka 181, Tokyo, Japan
2.Yunnan Observatory, Academia Sinicai, Kunming, P. R. China
Recommended Citation
GB/T 7714
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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