γ射线暴的研究进展(Ⅱ):γ暴的辐射机制及能谱形成  

Progress of the Study of Gamma-ray Bursts(Ⅱ):The Radiation Mechanisms and Formation of Spectra

作　　者：韦大明[1] 陆埮[1] 

机构地区：[1]南京大学天文系,南京210093

出　　处：《天文学进展》1995年第3期220-223,共4页Progress In Astronomy

摘　　要：在中子星作为γ暴源的基础上讨论了各种辐射机制及能谱形成。由于中子星表面磁场很强，我们首先讨论了强磁场中的辐射过程，包括同步辐射和吸收，单光子和双光子的产生和湮灭，康普顿散射，轫致辐射等。然后我们讨论了γ暴的几种辐射机制，即同步辐射，轫致辐射和逆康普顿散射等，最后介绍了回旋吸收线和发射线的可能产生机制。We discuss the various radiation mechanisms and the formation of the spectraof γ-ray bursts based on the assumption that γ-ray burst sources are neutron stars.Because the magnetic field is very strong near the neutron star surface, we first reviewthe radiation processes in strong magnetic field, including synchrotron radiation andabsorption, one-photon pair production and annihilation, two-photon pair productionand annihilation, Compton scattering and bremsstrahlung. Then we discuss some mainradiation mechanisms of γ-ray burst, i.e. synchrotron radiation, bremsstrahlung andinverse Compton scattering. Finally we discuss some probable mechanisms for producingthe cyclotron absorption lines and emission lines.

关 键 词：Γ射线暴 Γ暴 辐射机制 能谱形成 

分 类 号：P172.3[天文地球—天文学]