Dark Matter - where do we stand?
Prof. Dr. Lars Bergström (Universität Stockholm)

The hunt for the identity of the particle responsible for five times more mass in the Universe than ordinary matter is getting increasingly intensified. New hints - or false leads? - have recently appeared in the energy distribution of cosmic rays. In particular, there seems to exist an unexpected excess of antimatter (positrons) in the 10 GeV to 1 TeV range which begs for an explanation. Dark matter annihilating in our galactic halo of dark matter is one of several proposals.
In this talk, we will briefly review the history of the dark matter problem, and explain why the scientific community is more and more certain that dark matter has to exist. Methods of detection will be summarized, and recent claims of detected signals discussed.