出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要:Relations linking the temporal and spectral properties of the prompt emission of gamma-ray bursts to the absolute luminosity are of great importance as they both constrain the radiation mechanisms and represent potential distance indicators. In a recent work we took into consideration two of such relations: the lag-luminosity relation and the duration-luminosity relation of GRB pulses. By connecting lags to the spectral evolution and the shape of the pulses from a linear expansion of the pulse properties around the maximum and coupling it to the duration-luminosity relation, we obtained the lag-luminosity and the lag-duration relations, checked also by a Monte-Carlo generation of GRB synthetic populations. We found that the duration-luminosity relation must be satised to reproduce the observational peak ux diagram of BATSE GRB pulses. Here we extend our analysis by discussing how duration-luminosity relation could be compatible with the internal shock model of the prompt emission of GRBs.