磁逆Compton散射谱与γ射线暴辐射机制

Magnetic converse-Compton scattering spectra and the radiation mechanism of GRB

强磁场中相对论电子的逆Compton散射，即磁逆Compton散射，是天体高能辐射的一种重要辐射机制．本文利用磁逆Compton散射的半经典量子理论的回旋共振散射微分截面公式，采用相对论变换方法，计算了磁中子星表面附近的磁逆Compton散射的能谱，并作出了相应的能谱图，与γ射线暴的观测能谱符合得很好．结果表明，磁逆Compton散射是软重复暴类型的γ射线暴的一种可能的辐射机制．

The converse-Compton scattering of the relativistic electrons in strong magnetic field,also called the magnetic converse Compton scattering,is an important radiation mechanism in high energy astronomy. In this paper,adopting the formula of the resonant scattering cross section in the semi-classical quantum theory of the magnetic converse-Compton scattering and using the relativistic translation method,we calculated the spectra of the magnetic converse-Compton scattering near the surface of the magnetic neutron star. Our result is consistent with the observed spectra of GRB very well,which strongly implys that the magnetic converse-Compton scattering is one of the possible radiation mechanisms of the soft repeat burst.