Document Detail

Negative energy modes and gravitational instability of interpenetrating fluids.
MedLine Citation:
PMID:  12088055     Owner:  NLM     Status:  PubMed-not-MEDLINE    
We study the longitudinal instabilities of two interpenetrating fluids interacting only through gravity. When one of the constituents is of relatively low density, it is possible to have a band of unstable wavenumbers well separated from those involved in the usual Jeans instability. If the initial streaming is large enough, and there is no linear instability, the indefinite sign of the free energy has the possible consequence of explosive interactions between positive and negative energy modes in the nonlinear regime. The effect of dissipation on the negative energy modes is also examined.
A R Casti; P J Morrison; E A Spiegel
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Annals of the New York Academy of Sciences     Volume:  867     ISSN:  0077-8923     ISO Abbreviation:  Ann. N. Y. Acad. Sci.     Publication Date:  1998 Dec 
Date Detail:
Created Date:  2002-06-28     Completed Date:  2002-07-12     Revised Date:  2003-11-03    
Medline Journal Info:
Nlm Unique ID:  7506858     Medline TA:  Ann N Y Acad Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  93-108     Citation Subset:  -    
Department of Applied Physics, Columbia University, New York, New York 10027, USA.
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