Does the Prompt γ‐Ray Emission of Gamma‐Ray Bursts Arise from Resonant Inverse Compton Scattering?

Abstract

We argue that the dominant radiation mechanism responsible for the early prompt γ-ray emission of gamma-ray bursts could be the resonant inverse Compton scattering of relativistic electrons in an intense magnetic field. By using this mechanism, some problems in the field of gamma-ray bursts could be clarified, e.g., the origin of the Amati relation, the formation of the observed broken power-law spectra, and the related deadline problem, among others. Our model also predicts that the emitted γ-rays could be highly polarized.