Mr
Juan Carlos Munoz Cuartas
(Astrophysikalisches Institut Potsdam)
11/11/2010, 11:30
Dark matter halos
Contributed talk
We present a detailed study of the redshift evolution of dark matter halo structural parameters in a LambdaCDM cosmology. We study the mass and redshift dependence of the concentration, shape and spin parameter in Nbody simulations spanning masses from 10^{10} Msun/h to 10^{15} Msun/h and redshifts from 0 to 2. We present a series of fitting formulas that accurately describe the time evolution...
Dr
Torsten Bringmann
(Hamburg University)
11/11/2010, 11:50
Dark matter halos
Contributed talk
The kinetic decoupling of weakly interacting massive particles
(WIMPs) in the early universe sets a scale that can directly be translated into a small-scale cutoff in the spectrum of matter density fluctuations.
I present a formalism which allows to describe this decoupling process in great detail and to determine the cutoff scale to a high accuracy; with decoupling temperatures of several...
Mr
Andreas Maurer
(Institute for Experimental Physics, University of Hamburg)
11/11/2010, 12:10
Dark Stars
Contributed talk
Recently, it has been proposed that self-annihilating dark matter could have a
significant effect on the formation and development of the first stars in
the universe. In such a model, the energy from self-annihilation of dark matter particles
may be the main power source for this class of young stellar objects
called Dark Stars (DS). Their features (e.g. luminosity, temperature,...
