摘要
From analysing the third burst and transient source experiment gamma-ray burst catalog,systematic variations of average observational characteristics ofγ-ray bursts(GRBs)with a time scale of months to years are revealed,which raise a difficulty to existing models and indicate an origin of GRBs,at least partly,within the heliosphere.A possible GRB producing process is discussed.
基金
Supported by the National Natural Science Foundation of China,and firstly presented to the 2nd meeting of High Energy Astrophysics Division of ASS,April 29・May 4,1996,San Diego.
