CHINESE ACAD SCI,INST HIGH ENERGY PHYS,COSM RAY & HIGH ENERGY ASTROPHYS LAB,BEIJING 100039,PEOPLES R CHINA
; BEIJING NORMAL UNIV,DEPT ASTRON,BEIJING 100875,PEOPLES R CHINA
By using the first, second and third electronic burst and transcient source experiment catalogs, a joint analysis of spatial and temporal distributions and hardness ratios of gamma-ray bursts is performed. Turning point features at C-max/C-min similar to 6 are found. This probably indicates the existence of two components of burster population which have distinct spatial distributions.