62 citations · 309 across the 13 of their papers we have counts for
9 papers · 1 filter
The dynamical influence of cooling in the envelope of prestellar and protostellar cores
P. Lesaffre, A. Belloche, J. -P. Chieze +1
We compute numerical simulations of spherical collapse triggered by a slow increase in external pressure. We compare isothermal models to models including cooling with a simple but…
Temporal evolution of magnetic molecular shocks II. Analytics of the steady state and semi-analytical construction of intermediate ages
P. Lesaffre, J. -P. Chièze, S. Cabrit +1
In the first paper of this series (Paper I) we computed time dependent simulations of multifluid shocks with chemistry and a transverse magnetic field frozen in the ions, using an…
Temporal evolution of magnetic molecular shocks I. Moving grid simulations
P. Lesaffre, J. -P. Chièze, S. Cabrit +1
We present time-dependent 1D simulations of multifluid magnetic shocks with chemistry resolved down to the mean free path. They are obtained with an adaptive moving grid implemente…
A radiation-hydrodynamics scheme valid from the transport to the diffusion limit
E. Audit, P. Charrier, J. -P. Chièze +1
We present in this paper the numerical treatment of the coupling between hydrodynamics and radiative transfer. The fluid is modeled by classical conservation laws (mass, momentum a…
Non equilibrium thermodynamics and cosmological pancakes formation
Romain Teyssier, Jean-Pierre Chieze, Jean-Michel Alimi
We investigate the influence of non equilibrium thermodynamics on cosmological structure formation. In this paper, we consider the collapse of planar perturbations usually called "…
Multi-phase Hydrodynamics and X-ray Clusters Formation
Romain Teyssier, Jean-Pierre CHIEZE, Jean-Michel Alimi
We investigate the role of radiative cooling within the core of large X-ray clusters using multi-phase hydrodynamics. We developed for that purpose a spherically symmetric hydrodyn…
Are Large X-ray Clusters at Thermal Equilibrium ?
Jean-Pierre Chieze, Romain Teyssier, Jean-Michel Alimi
We simulate the formation of a large X-ray cluster using a fully 3D hydrodynamical code coupled to a Particle-Mesh scheme which models the dark matter component. We focus on a poss…
Self Similar Spherical Collapse Revisited: a Comparison between Gas and Dark Matter Dynamics
Romain Teyssier, Jean-Pierre CHIEZE, Jean-Michel Alimi
We reconsider the collapse of cosmic structures in an Einstein-de Sitter Universe, using the self similar initial conditions of Fillmore & Goldreich (1984). We first derive a new a…
Gas and Dark Matter Spherical Dynamics
Jean-Pierre CHIEZE, Romain Teyssier, Jean-Michel Alimi
We investigate the formation of spherical cosmological structures following both dark matter and gas components. We focus on the dynamical aspect of the collapse assuming an adiaba…