CNRS Université Bordeaux

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The emerging view of the extreme TeV Galaxy

Ryan CHAVES, Max-Planck-Institut fuer Kernphysik, Heidelberg, Deutschland
Vendredi 25 Mars 2011 à 11h00 - Salle des Séminaires

Our understanding of the Galaxy in the very-high energy gamma-ray domain has dramatically improved since the inception of the H.E.S.S. Galactic Plane Survey in 2004. The four H.E.S.S. imaging atmospheric Cherenkov telescopes in Namibia are highly sensitive to gamma rays above 0.1 TeV and feature a large 5-degree field-of-view, making them especially suited for large surveys. From their vantage point in the southern hemisphere, the H.E.S.S. telescopes have now detected an unexpectedly large and diverse population of 66 Galactic sources of TeV gamma rays, whereas only a handful of sources were previously known. The source population has been revealed to be dominated by pulsar wind nebulae and supernova remnants, although more than a third remain unidentified or confused, illustrating both the challenges and scientific potential that pervade the emerging field of TeV gamma-ray astrophysics. This talk will summarize the current state of our knowledge of the extreme TeV Galaxy — including reports of the latest and most remarkable discoveries from the H.E.S.S. Survey — and present an outlook for the future based on collaborative multi-wavelength endeavors, H.E.S.S.-II., and the next-generation Cherenkov Telescope Array.