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Humboldt-Universität zu Berlin - Mathematisch-Naturwissen­schaft­liche Fakultät - Experimentelle Elementarteilchenphysik

10.02.2012 - M. Paz Arribas: Observations of the Supernova Remnant "Vela Junior" with H.E.S.S.

16-17h s.t.
Wann 10.02.2012 von 16:00 bis 17:00 (Europe/Berlin / UTC100) iCal
Wo LCP, NEW 14, 3'12


Since their discovery by Victor Hess one hundred years ago, cosmic rays have been extensively studied by a variety of experiments. Their spectrum and composition have been measured in a large energy range, extending over 6 decades in energy. But despite these efforts, the origin of cosmic rays still remains a mistery.

Traditionally, supernova remnants are believed to be the acceleration sites for Galactic cosmic rays. Supernova remnants are the left-overs of some of the most violent events in the universe: the explosions of massive stars at the end of their lives. These explosions produce supersonic shock fronts expanding in the interstellar medium. Actual theories about the evolution of the shock fronts, involving magneto-hydro-dynamical processes, predict particle spectra that match well the shape of the spectrum of cosmic rays.

Observations of supernova remnants in gamma-rays are crucial for testing the actual models and confirm supernova remnants as acceleration sites of Galactic cosmic rays.

In my presentation I will give an overview of the current understanding of TeV supernova remnants from the experimental point of view. I will especially concentrate on two very well known sources: RX J1713.7-3946 and RX J0852.0-4622 (also known as "Vela Junior").