Searching for PeV accelerators with Very-High-Energy Gamma Rays
Karl Kosack (DAp)
Mardi 25/06/2019, 10:00-11:00
Bat 713, salle de séminaires Galilée , CEA Saclay, Orme des Merisiers

From the cosmic-ray spectrum, we know that there must be objects in our galaxy that can accelerate particles to above PeV energies, but it's not clear what they are. Very-High-Energy gamma-rays (E>100 GeV to >100 TeV) provide a useful tool for searching for these accelerators, since they provide a view of non-thermal photon emission from the sites where particles are accelerated.  I will present an overview of the problem, how we are using telescopes like HESS (and later CTA) to search for these "PeVatrons" and what difficulties have been encountered.  Finally, I will show the latest results, including evidence for an acceleration event in the Galactic Center.


Local contact, organization: V. Lebouteiller.


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