Lun. 05/02/2018 13:30 Grande Ourse, Bâtiment 13, Etage 1
PENARRUBIA Jorge (Institute for Astronomy - Edinburgh Univ.)
Finding the invisible - the search for dark substructures
(LUPM/Interactions fondamentales, Astroparticules et Cosmologie)
One of the most striking predictions from the Cold Dark Matter (CDM) paradigm postulates the existence of myriads of planet-sized subhaloes devoid of stars (i.e. `dark'). A large population of these objects generates a stochastic gravitational field that can perturb the trajectories of visible systems. In this talk I will present a statistical technique for deriving the spectrum of random fluctuations directly from the number density of substructures with known mass and size functions.
Pour plus d'informations, merci de contacter Lavalle J.