H.E.S.S. discovery of VHE<i>γ</i>-rays from the quasar PKS 1510−089
H.E.S.S. discovery of VHE<i>γ</i>-rays from the quasar PKS 1510−089
The quasar PKS 1510-089 (z=0.361) was observed with the H.E.S.S. array of imaging atmospheric Cherenkov telescopes during high states in the optical and GeV bands, to search for very high energy (VHE, defined as E >= 0.1 TeV) emission. VHE \gamma-rays were detected with a statistical significance of 9.2 standard …