摘要
本文利用热同步辐射谱和正负电子对双光子湮灭谱直接拟合1979年3月5日γ射线爆观察能谱,从而获得描写源区特性一些参数,结合其它观察资料,探讨了这个爆的源区特性。结果表明,爆源距离不大于2.2kpc,并不是在LMC的N49超新星遗迹处。源区的磁场范围是1.5×(10^(12)—10^(11))G。同步辐射区和双光子湮灭区的厚度分别约为0.05—2.
In this paper, the thermal synchrotron radiation spectrum and electron-positron pairs annihilation spectrum are used to fit the observed spectrum of the March 5, 1979 gamma-ray burst. From such a spectrum fit, we can obtain some parameters for discribing the source properties. Combined the other observed data, the source properties about the event is studied. The results show that the distance between the source and the Earth is less than 2.2 kpc (i.e., the source is not located in the supernova remnant N49 in the Large Magellanic Cloud); the magnetic field of the source ranges from 1.5×1011G to 1.5×1012G; the thicknesses of synchrotron radiation and two-photon annihilation regions are in the ranges from 0.05 cm to 2.80 cm and from 240 cm to 80 cm, respectively.
基金
国家自然科学基金
关键词
高能
Γ射线爆
辐射机制
High energy-Gamma-ray burst-Radiation mechanism
