News

Tracking the Riddle of Cosmic Gamma Rays

First simultaneous observation of a gamma-ray burst in the X-ray and in the very high energy gamma ray band.For the first time a gamma-ray burst (GRB) has been observed simultaneously in the X-ray and in the very high energy gamma ray band. The MAGIC telescope at La Palma, Canary Islands, observed the enigmatic source GRB050713A, a long duration gamma-ray burst, only 40 seconds after the explosion, at photon energies above 175 GeV.