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  1. No Access

    Article

    Violent relaxation and mixing in non-uniform one-dimensional gravitational systems

    A series of numerical experiments on non-uniform one-dimensional gravitational systems have been performed with the aim of testing the conflicting models of violent relaxation, developed by Lynden-Bell and by ...

    G. Severne, M. Luwel in Astrophysics and Space Science (1986)

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    Article

    Book reviews

    J. Kleczek, R. H. van Gent, Robert J. Rutten, J. C. de Munck… in Space Science Reviews (1986)

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    Chapter

    Collisional Relaxation: A New Approach

    Recent numerical simulations for 1-dimensional systems have shown that the relaxation time due to encounters is far shorter than the generally accepted estimate. To account for this, a new approach to the theo...

    G. Severne, M. Luwel in Dynamics of Star Clusters (1985)

  4. No Access

    Article

    Numerical study of the relaxation of one-dimensional gravitational systems

    The effective relaxation of one-dimensional gravitational systems towards micro-canonical equilibrium is demonstrated in a series of computer experiments, the Kolmogorov-Smirnov goodness of fit test being used...

    M. Luwel, G. Severne, P. J. Rousseeuw in Astrophysics and Space Science (1984)

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    Article

    Dynamical theory of collisionless relaxation

    In his theory of violent relaxation, Lynden-Bell gave a rigorous derivation of the equilibrium distribution, but only a qualitative discussion of the manner in which equilibrium is attained Here we present a f...

    G. Severne, M. Luwel in Astrophysics and Space Science (1980)

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    Article

    Delocalization effect on the relaxation of inhomogeneous gravitational systems

    The correct description of encounters in anN-body gravitational system introduces a variety of effects which are ignored in the standard discussions of the relaxation proces. The present parer gives an evaluation...

    J. -P. Parisot, G. Severne in Astrophysics and Space Science (1979)

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    Article

    Kinetic theory for finite inhomogeneous gravitational systems

    A kinetic theory for finite inhomogeneous gravitational systems is developed, starting from the BBGKY hierarchy of equations for the reduced distribution functions. Polarization effects are ignored, and a ‘pro...

    G. Severne, M. J. Haggerty in Astrophysics and Space Science (1976)

  8. No Access

    Article

    Vibrations of inhomogeneous non-rotating gravitational systems

    Dispersion relations are obtained and analysed for a non-uniform, non-rotating gravitational system. A restriction to short wavelengths makes it possible to consider a linearized form of the collisionless Bolt...

    G. Severne, A. Kuszell in Astrophysics and Space Science (1975)

  9. No Access

    Article

    Monotonic evolution of Boltzmann's H in weakly coupled gravitational systems

    GASES with gravitational interactions are expected to evolve away from a state of uniform density and temperature1,2. Such behaviour has been strikingly confirmed by numerical experiments on small gravitational s...

    M. J. HAGGERTY, G. SEVERNE in Nature (1974)