Very High Energy (VHE) g -astronomy and cosmic ray physics are the main goals of the ARGOYBJ
experiment. The detector is located in Tibet (People's Republic of China) and is a full
coverage Extensive Air Shower array consisting of a carpet of Resistive Plate Chambers (RPCs).
Altitude and full coverage ensure an energy threshold of few hundreds of GeV for primary photons
detected in shower mode, while the RPC time resolution gives a good pointing accuracy, thus
allowing a high sensitivity to g -ray sources. The large eld of view (FoV) and the high duty-cycle
allow the continuous monitor of the Northern sky in the declination band (10, +70). The
detector operates also in scaler mode in order to look for Gamma Ray Burst (GRB) signals in the
range 1-100 GeV in coincidence with GRB detection by satellites. After some detail about the
performances of the detector, the present results concerning g -astronomy will be presented
