Observation of the shell-type supernova remnant RXJ0852.0 -4622 with H.E.S.S.

Shell-type supernova remnants are prime candidates for the acceleration of galactic cosmic rays. The detection of TeV γfi -ray emission from the shells is believed to be a key to unravelling the underlying acceleration mechanisms. In 2004 and 2005, the shell-type supernova remnant RXJ0852.0 fi 4622 (also called G266.2-1.2) was observed and detected with H.E.S.S., an array of four Imaging Atmospheric Cherenkov Telescopes located in Namibia, dedicated to observations ofγ -rays above 100 GeV. The energy spectrum of the source can be described by a power law and the integral fiux is similar to the fiux from the Crab nebula. The emission region is found to be clearly extended, making RX J0852.0 fi 4622 the second shell-type supernova remnant which has been spatially resolved in TeV energies [1]. The morphology of the TeV emission is well correlated with the X-ray morphology. The results of the observations will be presented and possible implications will be discussed.