费米大面阵望远镜探测到的六颗脉冲星的Gamma-ray和射电性质
Gamma-ray and Radio Properties of Six Pulsars Detected by the Fermi Large Area Telescope
摘要：
本文报道了费米伽马射线空间望远镜（原名GLAST）上的大视场望远镜（LAT）对PSR J 0631 +1036、J 0659 +1414、J 0742 -2822、J1420-6048、J1509-5850和J1718-3825脉冲伽马射线的探测。虽然这六颗双星的自旋参数各不相同，但它们都有一个重要的功能：：它们的伽马射线光变曲线（至少在目前的计数统计中）是单峰的。对于两颗双星，在光变曲线中有双峰结构的暗示。根据发射起源于磁层高层的模型，讨论了这组恒星的观测光变曲线的形状。观测到的伽马射线光变曲线的相位一般与高空模型预测的相一致，尽管我们推测PSR J 0659 +1414的伽马射线发射可能具有所有费米双星中最软的光谱，并且效率非常低，来自磁层相对较低的位置。高质量的无线电极化数据显示，除一个外，所有卫星都具有高度的线性极化。这使我们能够对观察几何形状施加一些约束，并有助于将伽马射线光变曲线与高能光束模型进行比较。
英文摘要：
We report the detection of pulsed gamma-rays for PSRs J0631+1036, J0659+1414, J0742-2822, J1420-6048, J1509-5850 and J1718-3825 using the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope (formerly known as GLAST). Although these six pulsars are diverse in terms of their spin parameters, they share an important feature: their gamma-ray light curves are (at least given the current count statistics) single peaked. For two pulsars there are hints for a double-peaked structure in the light curves. The shapes of the observed light curves of this group of pulsars are discussed in the light of models for which the emission originates from high up in the magnetosphere. The observed phases of the gamma-ray light curves are, in general, consistent with those predicted by high-altitude models, although we speculate that the gamma-ray emission of PSR J0659+1414, possibly featuring the softest spectrum of all Fermi pulsars coupled with a very low efficiency, arises from relatively low down in the magnetosphere. High-quality radio polarization data are available showing that all but one have a high degree of linear polarization. This allows us to place some constraints on the viewing geometry and aids the comparison of the gamma-ray light curves with high-energy beam models.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
