A Comptonization Model for the Prompt Optical and Infrared Emission of GRB 041219A

Zheng Zheng, Ye Lu, Yong-Heng Zhao

Prompt optical emission from the $\gamma$-ray burst of GRB 041219A has been reported by Vestrand et al. There was a fast rise of optical emission simultaneous with the dominant $\gamma$-ray…