Constraining the nature of Dark Energy and Dark Matter is one of the top themes of modern astrophysics. In this lecture, we present a coherent picture of this topic using information carried by radio and X-ray wavelengths. In the first part of the lecture, we cover the theoretical background of dark matter and dark energy tests, describe several practical approaches with an emphasis on the use of galaxy clusters, and give an overview of relevant current and future instruments. In the second part, we describe modern distance determination methods, structure formation, Compact High-Velocity Clouds, the Warm Hot Intergalactic Medium and the Sunyaev-Zeldovich Effect.
Since it may violate the Urheberrecht we cannot place the electronic version of the lecture script on this web page, sorry.
Click here for last year's students' evaluation of this course (in German).