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	UNSTABLE GALAXY MODELS
	Wang, Zhiyu ; Guo, Yan ; Lin, Zhiwu ; Zhang, Pingwen
	2013
关键词	Vlasov-Poisson instability galaxy model SPHERICAL STELLAR-SYSTEMS STABILITY DYNAMICS
英文摘要	The dynamics of collisionless galaxy can be described by the Vlasov-Poisson system. By the Jean's theorem, all the spherically symmetric steady galaxy models are given by a distribution of Phi (E, L), where E is the particle energy and L the angular momentum. In a celebrated Doremus-Feix-Baumann Theorem [7], the galaxy model Phi (E, L) is stable if the distribution Phi is monotonically decreasing with respect to the particle energy E. On the other hand, the stability of Phi (E, L) remains largely open otherwise. Based on a recent abstract instability criterion of Guo-Lin [11], we constuct examples of unstable galaxy models of f (E, L) and f (E) in which f fails to be monotone in E.; Mathematics, Applied; Mathematics; SCI(E); 0; ARTICLE; 4,SI; 701-714; 6
语种	英语
出处	SCI
出版者	kinetic and related models
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/314318]
专题	数学科学学院
推荐引用方式 GB/T 7714	Wang, Zhiyu,Guo, Yan,Lin, Zhiwu,et al. UNSTABLE GALAXY MODELS. 2013-01-01.

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