22 citations · 98 across the 8 of their papers we have counts for
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astro-ph1998★ 7 cited
Negative Energy Modes and Gravitational Instability of Interpenetrating Fluids
A. R. R. Casti, P. J. Morrison, E. A. Spiegel
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 t…
chao-dyn1998★ 7 cited
Invariants and Labels in Lie-Poisson Systems
Jean-Luc Thiffeault, P. J. Morrison
Reduction is a process that uses symmetry to lower the order of a Hamiltonian system. The new variables in the reduced picture are often not canonical: there are no clear variables…