Expectation on Observation of Gamma-ray Astronomy with the LHAASO Project

Abstract

for the LHAASO CollaborationThe Large High Altitude Air Shower Observatory (LHAASO) project is a new generation EAS array, which will be built in Daocheng, Sichuan province, China at 4400m above sea level. With a wide field-of-view and high duty cycle, LHAASO will survey a large sky region in the declination band from -20 • to 80 • with a sensitivity of 10 mili-Crab per year at a much wider energy range from 100 GeV to 1 PeV. Besides increasing the number of VHE gamma-ray sources, it will also provide accurate spectrum measurement for the known γ-ray sources, especially for extended sources and transient phenomena. These are very important for us to look sight into γ-ray emission mechanism and particle acceleration within the sources. In this paper, we will investigate, basing on detector simulation, the ability of LHAASO on the measurement of spectra of SNRs, Cygnus region, diffuse galactic γ-rays and AGN flares.