Curvature-radiation--pair-production model for. gamma. -ray pulsars
Curvature-radiation--pair-production model for. gamma. -ray pulsars
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DOI：
10.1086/156486
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发表时间：
1978-10
期刊：
影响因子：
--
通讯作者：
A. Harding;E. Tademaru;L. Esposito
中科院分区：
文献类型：
--
作者：
A. Harding;E. Tademaru;L. Esposito
假设脉冲星伽马射线是通过中子星附近初级电子的曲率辐射产生的，并且它们仅通过强电场和磁场中的电子对产生过程而衰减，我们使用磁层的详细模型来计算所得的光学深度和脉冲形状。我们考虑 E.B=0 和 E.Bnot =0 对光子衰减的影响，以及光子能量、旋转速率和倾斜度对脉冲形状的影响。研究发现，脉冲星旋转往往会增加对的产生，从而导致最短周期脉冲星的光学深度变大。计算还预测了可观测的伽玛射线发射的高能截止值和光谱。
Assuming that pulsar ..gamma..-rays are produced via curvature radiation of primary electrons near the neutron star and that they are attenuated only through the pair production process in strong electric and magnetic fields, we use a detailed model of the magnetosphere to calculate the resulting optical depths and pulse shapes. We consider both the effect of E.B=0 and E.Bnot =0 on the attenuation of the photons, and the effect of photon energy, rotation rate, and obliquity on the pulse shapes. It is found that pulsar rotation tends to increase pair production, causing large optical depths for the shortest period pulsars. The calculations also predict high-energy cutoffs and spectra for the observable ..gamma..-ray emission.