Classification Of Gamma Burst Radio Afterglows

Firstly,in this paper,the observational characteristics and theoretical interpretation of the prompt emission and afterglow emission of the gamma-ray bursts are briefly summarized.Then,we introduce my work about the classification of the radio afterglow of the gamma-ray burst.We found that the radio-selected GRB samples(radio-loud and radio-quiet)exhibit a clear dichotomy in terms of their distributions of intrinsic durations(Tint),isotropic energies in ?-rays(E?,iso),the circum-burst medium density(n)and the spectral radio peak luminosity(Lv,p).On average,the values of Tint,E?,iso,n,Lv,p ind Fhost of radio-quiet GRBs are relatively smaller than those of radio-loud ones.However,the redshifts and host flux densities of both samples are similarly distributed.In addition,a positive power-law correlation of Lv,p ? E?,iso 0.41±0.04 is found for the radio-loud sample,which is marginally consistent with that of the radio-quiet GRB sample.Meanwhile a negative correlation between Tint and 1+z is confirmed to similarly hold for both radio-loud and radio-quiet GRBs.The dividing line between short and long GRBs in the rest frame is at Tint ?1s.In conclusion,we propose that the radio-selected GRBs could be originated from distinct progenitors and central engines,together with environments.And then,we introduced the design of GECAM time system and how to use the GPS signal to modify the frequency of crystals.In the process of implementation,considering the efficiency of data processing,we choose fourth-order polynomial.The time precision after correction can meet the requirements<0.5?s(in general,the time accuracy can be below 0.2?s).Finally,this paper summarizes and looks forward to the development trend of this research field.