161 citations · 1.5k across the 44 of their papers we have counts for
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Vector Resonant Relaxation of Stars around a Massive Black Hole
Jean-Baptiste Fouvry, Ben Bar-Or, Pierre-Henri Chavanis
In the vicinity of a massive black hole, stars move on precessing Keplerian orbits. The mutual stochastic gravitational torques between the stellar orbits drive a rapid reorientati…
Secular dynamics of long-range interacting particles on a sphere in the axisymmetric limit
Jean-Baptiste Fouvry, Ben Bar-Or, Pierre-Henri Chavanis
We investigate the secular dynamics of long-range interacting particles moving on a sphere, in the limit of an axisymmetric mean field potential. We show that this system can be de…
New predictions from the logotropic model
Pierre-Henri Chavanis
In a previous paper we have introduced a new cosmological model that we called the logotropic model. The logotropic model is able to account, without free parameter, for the consta…
A predictive model of BEC dark matter halos with a solitonic core and an isothermal atmosphere
Pierre-Henri Chavanis
We develop a model of Bose-Einstein condensate dark matter halos with a solitonic core and an isothermal atmosphere based on a generalized Gross-Pitaevskii-Poisson equation [P.H. C…
Relativistic Gravitational Phase Transitions and Instabilities of the Fermi Gas
Zacharias Roupas, Pierre-Henri Chavanis
We describe microcanonical phase transitions and instabilities of the ideal Fermi gas in general relativity at nonzero temperature confined in the interior of a spherical shell. Th…
Caloric curves of self-gravitating fermions in general relativity
Giuseppe Alberti, Pierre-Henri Chavanis
We study the nature of phase transitions between gaseous and condensed states in the self-gravitating Fermi gas at nonzero temperature in general relativity. The condensed states c…