A new population of very high-energy gamma-ray sources detected with H.E.S.S. in the inner part of the Milky Way

摘要: The H.E.S.S., experiment (High Energy Stereoscopic System) is an array of four imaging Cherenkov telescopes designed to detect gamma-rays in the energy domain above 100 GeV. utilise stereoscopic approach, which particle showers atmosphere are observed by several simultaneously, connected a central trigger system at hardware level. This approach greatly reduces background instrument and thereby allows one decrease threshold improve sensitivity system. functionality performance presented. Making use reduced improved sensitivity, survey inner part Milky way very high gamma-rays, was conducted 2004 with H.E.S.S. unprecedented Galactic plane between +- 30deg, longitude +-3deg, latitude relative centre for total 230 hours, reaching average flux 3% Crab nebula energies 200 Fourteen new sources were detected significance level greater than 4 sigma addition three previously known this area. Detailed spectral morphological information these provided, along discussion on possible counterparts other wavelength bands. distribution galactic appears be consistent scale height disc parent population less parsec.