Energy Mechanisms of γ-Ray Bursts

The fireball model is universally accepted as the standard model in explaining γ-ray bursts.Phase transition of strange stars is one of the factors leading to fireball appearance, which not only can explain the short scales and high energy of γ-ray bursts, but also address the issue of baryon pollution of the fireball. On the basis of researching the energy mecha- nism of gamma-ray bursts, the possibility that the energy of gamma-ray bursts at cosmology distance(~ Gpc)comes from phase transition of strange stars is discussed.