October 17 (Wed), 14:15 in A315   

Ole Eggers Bjælde (Aarhus, Denmark)


The quest for dark energy

Dark Energy is presently the most attractive explanation for the accelerated expansion of the Universe; however, our current knowledge of the properties of Dark Energy is minimal. For this reason much effort and money is being invested into the quest for Dark Energy and its properties, and within the next decade we expect to know the answer to at least two important questions: Is Dark Energy dynamic or a Cosmological Constant? Is Dark Energy cold, in the sense that there can be Dark Energy clustering? In the talk I will review the present status of Dark Energy and talk about some of the efforts that are made to discover more. As a specific example, I will talk about using future cluster surveys such as the ESA mission Euclid to answer the two questions above.