A giant bar induced by a merger event at z=0.4? (2008)
Peirani, Sébastien, Hammer, Francois, Flores, Hector, Yang, Yanbin, Athanassoula, Lia
(Aims) We present a physical model of the formation of J033239.72-275154.7, a galaxy observed at z=0.41 and characterized by a big young bar of size 6 kpc. The study of this system is particularly...
Dynamics of Nearby Groups of Galaxies: the role of the cosmological constant (2008)
(context) Different cosmological data are consistent with an accelerated expansion produced by an exotic matter-energy component, dubbed "dark-energy''. A cosmological constant is a possibility since...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Dark Matter Accretion into Supermassive Black Holes (2008)
The relativistic accretion rate of dark matter by a black hole is revisited. Under the assumption that the phase space density indicator, $Q=\rho_{\infty}/\sigma^3_{\infty}$, remains constant during...
Dark Matter Accretion into Supermassive Black Holes (2008)
Peirani, Sébastien, De Freitas Pacheco, José Antonio
The relativistic accretion rate of dark matter by a black hole is revisited. Under the assumption that the phase space density indicator, $Q=\rho_{\infty}/\sigma^3_{\infty}$, remains constant during...
Dark Matter Accretion into Supermassive Black Holes (2008)
Peirani, Sébastien, De Freitas Pacheco, José Antonio
The relativistic accretion rate of dark matter by a black hole is revisited. Under the assumption that the phase space density indicator, $Q=\rho_{\infty}/\sigma^3_{\infty}$, remains constant during...
Dynamics of Nearby Groups of Galaxies: the role of the cosmological constant (2008)
Peirani, Sébastien, De Freitas Pacheco, José Antonio
(context) Different cosmological data are consistent with an accelerated expansion produced by an exotic matter-energy component, dubbed "dark-energy''. A cosmological constant is a possibility since...
Dynamics of Nearby Groups of Galaxies: the role of the cosmological constant (2008)
Peirani, Sébastien, De Freitas Pacheco, José Antonio
(context) Different cosmological data are consistent with an accelerated expansion produced by an exotic matter-energy component, dubbed "dark-energy''. A cosmological constant is a possibility since...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
Numerical investigation of lenses with substructures using the perturbative method (2008)
Peirani, Sébastien, Alard, Christophe, Pichon, Christophe, Gavazzi, Raphael, Aubert, Dominique
We present a statistical study of the effects induced by substructures on the deflection potential of dark matter halos in the strong lensing regime. This investigation is based on the pertubative...
A giant bar induced by a merger event at z=0.4? (2008)
Peirani, Sébastien, Hammer, Francois, Flores, Hector, Yang, Yanbin, Athanassoula, Lia
(Aims) We present a physical model of the formation of J033239.72-275154.7, a galaxy observed at z=0.41 and characterized by a big young bar of size 6 kpc. The study of this system is particularly...
A giant bar induced by a merger event at z=0.4? (2008)
Peirani, Sébastien, Hammer, Francois, Flores, Hector, Yang, Yanbin, Athanassoula, Lia
(Aims) We present a physical model of the formation of J033239.72-275154.7, a galaxy observed at z=0.41 and characterized by a big young bar of size 6 kpc. The study of this system is particularly...
Evolution of the Phase-Space Density of Dark Matter Halos and Mixing Effects in Merger Events (2005)
Peirani, Sébastien, Durier, Fabrice, De Freitas Pacheco, José Antonio
Cosmological N-body simulations were performed to study the evolution of the phase-space density Q = rho/sigma^3 of dark matter halos. No significant differences in the scale relations Q ~...
Evolution of the Phase-Space Density of Dark Matter Halos and Mixing Effects in Merger Events (2005)
Peirani, Sébastien, Durier, Fabrice, De Freitas Pacheco, José Antonio
Cosmological N-body simulations were performed to study the evolution of the phase-space density Q = rho/sigma^3 of dark matter halos. No significant differences in the scale relations Q ~...
Evolution of the Phase-Space Density of Dark Matter Halos and Mixing Effects in Merger Events (2005)
Peirani, Sébastien, Durier, Fabrice
Cosmological N-body simulations were performed to study the evolution of the phase-space density Q = rho/sigma^3 of dark matter halos. No significant differences in the scale relations Q ~...
Mass Determination of Groups of Galaxies: Effects of the Cosmological Constant (2005)
The spherical infall model first developed by Lema\^{i}tre and Tolman was modified in order to include the effects of a dark energy term. The resulting velocity-distance relation was evaluated...
Mass Determination of Groups of Galaxies: Effects of the Cosmological Constant (2005)
Peirani, Sébastien, De Freitas Pacheco, José Antonio
The spherical infall model first developed by Lemaître and Tolman was modified in order to include the effects of a dark energy term. The resulting velocity-distance relation was evaluated...
Mass Determination of Groups of Galaxies: Effects of the Cosmological Constant (2005)
Peirani, Sébastien, De Freitas Pacheco, José Antonio
The spherical infall model first developed by Lemaître and Tolman was modified in order to include the effects of a dark energy term. The resulting velocity-distance relation was evaluated...
Indirect Search for Dark Matter (2005)
Possible dark matter candidates are reviewed as well as indirect search methods based on annihilation or decay channels of these particles. Neutralino is presently the best particle candidate and its...
Indirect Search for Dark Matter (2005)
De Freitas Pacheco, José Antonio, Peirani, Sébastien
Possible dark matter candidates are reviewed as well as indirect search methods based on annihilation or decay channels of these particles. Neutralino is presently the best particle candidate and its...
Indirect Search for Dark Matter (2005)
De Freitas Pacheco, José Antonio, Peirani, Sébastien
Possible dark matter candidates are reviewed as well as indirect search methods based on annihilation or decay channels of these particles. Neutralino is presently the best particle candidate and its...
Evolution of the Phase-Space Density of Dark Matter Halos and Mixing Effects in Merger Events (2005)
Peirani, Sébastien, Durier, Fabrice, De Freitas Pacheco, José Antonio
Cosmological N-body simulations were performed to study the evolution of the phase-space density Q = rho/sigma^3 of dark matter halos. No significant differences in the scale relations Q ~...
Mass Determination of Groups of Galaxies: Effects of the Cosmological Constant (2005)
Peirani, Sébastien, De Freitas Pacheco, José Antonio
The spherical infall model first developed by Lemaître and Tolman was modified in order to include the effects of a dark energy term. The resulting velocity-distance relation was evaluated...
Indirect Search for Dark Matter (2005)
De Freitas Pacheco, José Antonio, Peirani, Sébastien
Possible dark matter candidates are reviewed as well as indirect search methods based on annihilation or decay channels of these particles. Neutralino is presently the best particle candidate and its...
Evolution of the Phase-Space Density of Dark Matter Halos and Mixing Effects in Merger Events (2005)
Peirani, Sébastien, Durier, Fabrice, De Freitas Pacheco, José Antonio
Cosmological N-body simulations were performed to study the evolution of the phase-space density Q = rho/sigma^3 of dark matter halos. No significant differences in the scale relations Q ~...
Indirect Search for Dark Matter (2005)
De Freitas Pacheco, José Antonio, Peirani, Sébastien
Possible dark matter candidates are reviewed as well as indirect search methods based on annihilation or decay channels of these particles. Neutralino is presently the best particle candidate and its...
Mass Determination of Groups of Galaxies: Effects of the Cosmological Constant (2005)
Peirani, Sébastien, De Freitas Pacheco, José Antonio
The spherical infall model first developed by Lemaître and Tolman was modified in order to include the effects of a dark energy term. The resulting velocity-distance relation was evaluated...