Matthias Bartelmann
Max-Planck-Institut für Astrophysik (Garching, Allemagne)
Salle Entresol Daniel Chalonge, Institut d'Astrophysique de Paris
|
| « Halo growth and lensing in dark-energy models » |
|
Matthias Bartelmann |
| If the Universe contains a form of dark energy different from a cosmological constant, structures start growing earlier than in cosmological-constant models with the same density and normalisation. Consequently, dark-matter haloes appear more concentrated. However, the normalisation has to be reduced for the models to agree with the COBE -DMR data. I describe first results on the impact of these counteracting effects on the structure and the gravitational-lensing effects of haloes. |
|
vendredi 24 janvier 2003 - 11:00 Salle Entresol Daniel Chalonge, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |