Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Perez, Jérôme"'
Autor:
Ramond, Paul, Perez, Jérôme
Publikováno v:
J. Math. Phys. 62, 112704 (2021)
Isochrone potentials, as defined by Michel H\'enon in the fifties, are spherically symmetric potentials within which a particle orbits with a radial period that is independent of its angular momentum. Isochrone potentials encompass the Kepler and har
Externí odkaz:
http://arxiv.org/abs/2104.05643
Autor:
Ramond, Paul, Perez, Jérôme
Publikováno v:
Cel. Mech. Dyn. Astro. 132 (2020): 22
In classical mechanics, the Kepler potential and the Harmonic potential share the following remarkable property: in either of these potentials, a bound test particle orbits with a radial period that is independent of its angular momentum. For this re
Externí odkaz:
http://arxiv.org/abs/2003.13456
In the potential theory, isochrony was introduced by Michel H\'enon in 1959 to characterize astrophysical observations of some globular clusters. Today, Michel Henon's isochrone potential is mainly used for his integrable property in numerical simula
Externí odkaz:
http://arxiv.org/abs/1902.01095
Revisiting and extending an old idea of Michel H\'enon, we geometrically and algebraically characterize the whole set of isochrone potentials. Such potentials are fundamental in potential theory. They appear in spherically symmetrical systems formed
Externí odkaz:
http://arxiv.org/abs/1804.11282
How can effective barotropic matter emerge from the interaction of cosmological fluids in an isotropic and homogeneous cosmological model ? The dynamics of homogeneous and isotropic Friedmann-Lema\^itre-Robertson-Walker universes is a natural special
Externí odkaz:
http://arxiv.org/abs/1603.02267
Autor:
Perez, Jerome
A survey of Michel Henon contributions to the study of globular cluster systems.
Comment: Invited talk at the "hommage a Michel Henon" conference held at the "Institut Henri Poincare" Paris, GRAVASCO trimestre, autumn 2013. Proceeding by Hermann
Comment: Invited talk at the "hommage a Michel Henon" conference held at the "Institut Henri Poincare" Paris, GRAVASCO trimestre, autumn 2013. Proceeding by Hermann
Externí odkaz:
http://arxiv.org/abs/1411.4932
Publikováno v:
PRD 90:123004 (2014)
We propose an association between the phase-space mixing level of a self-gravitating system and the indistinguishability of its constituents (stars or dark matter particles). This represents a refinement in the study of systems exhibiting incomplete
Externí odkaz:
http://arxiv.org/abs/1410.7677
Publikováno v:
General Relativity & Gravitation 46 1753 (2014)
In this paper, we exploit the fact that the dynamics of homogeneous and isotropic Friedmann-Lemaitre universes is a special case of generalized Lotka-Volterra system where the competitive species are the barotropic fluids filling the Universe. Withou
Externí odkaz:
http://arxiv.org/abs/1306.1037
Autor:
Maréchal, Lionel, Perez, Jérôme
Publikováno v:
Monthly Notices of the Royal Astronomical Society, July 2010, vol 405, p 2785-2790
This paper is devoted to Radial Orbit Instability in the context of self-gravitating dynamical systems. We present this instability in the new frame of Dissipation-Induced Instability theory. This allows us to obtain a rather simple proof based on en
Externí odkaz:
http://arxiv.org/abs/1003.2354
Autor:
Maréchal, Lionel, Perez, Jérôme
This paper presents elements about the radial orbit instability, which occurs in spherical self-gravitating systems with a strong anisotropy in the radial velocity direction. It contains an overview on the history of radial orbit instability. We also
Externí odkaz:
http://arxiv.org/abs/0910.5177