BROADBAND SPECTRAL PROPERTIES OF BRIGHT HIGH-ENERGY GAMMA-RAY BURSTS OBSERVED WITH BATSE AND EGRET

摘要

We present the spectral analysis of duration-integrated broadband spectra (in ?30 keV- 200 MeV) of 15 bright BATSE gamma-ray bursts (GRBs). Some GRB spectra are very hard, with their spectral peak energies being above the BATSE LAD passband limit of ～2 Me