We have weekly seminars dedicated to Cosmology and Astroparticle Physics (we also have other regular weekly meetings to discuss the latest results in our field). When available, former presentations can be downloaded from the past cosmology seminars pages.
Time: Wednesdays 14:15-15:15, during term time.
Place: room A315 (3rd floor of the Physicum building)
Format: 50′ + 10′ for questions
Contact: Francesco Montanari (francesco dot montanari at helsinki dot fi)
- 29.11.2017 Felix Kahlhoefer (DESY)
Phenomenology of self-interacting WIMPs.
Abstract: The observed dark matter relic abundance and the idea of thermal freeze-out motivate dark matter particles with weak-scale interactions (so-called WIMPs). On the other hand, discrepancies between numerical simulations and observations on galactic scales prefer models in which dark matter particles have rather strong self-interactions. In my talk I will discuss how to combine these two classes of dark matter models by considering dark matter particles interacting via a new light mediator. I will introduce different types of mediators and discuss the relevant observational and experimental constraints. While the simplest realizations of this set-up are strongly constrained, a number of possible modifications open up a range of interesting possibilities.
- 30.11.2017 (Thursday), 14:15 room A311 Nicola Tamanini (IPhT CEA-Saclay)
- 13.12.2017 Matti Heikinheimo (Helsinki)