Photon and Neutrino Spectra of Time-Dependent Photospheric Models of Gamma-Ray Bursts

Understand

Thermal photons from the photosphere may be the primary source of the observed prompt emission of gamma-ray bursts (GRBs).

• In order to produce the observed non-thermal spectra, some kind of dissipation mechanism near the photosphere is required.
• In this paper we numerically simulate the evolution of the photon spectrum in a relativistically expanding shell with a time-dependent numerical code.
• We consider two basic models.