Event submissions
In this paper we present the flowchart of the Gamma-Ray Burst (GRB) afterglows, to create a numerical FORTRAN code. In the context of several proposed models, the hydrodynamic evolution describing the external shock of the jet with the environment surrounding of the GRB source or the Interstellar medium is discussed. A comparison of the results with data by considering the synchrotron emission as a basic mechanism for the radiation part was also made.