论文标题
关于费米大面积望远镜数据中的惯用性的测量
On the measurement of handedness in Fermi Large Area Telescope data
论文作者
论文摘要
从我们星系外部的高能光子到达方向上的触手可及可能与白乳磁场的螺旋性有关。先前由Arxiv的估计值：1310.4826和Arxiv：1412.3171显示了Fermi大面积望远镜（LAT）观察到的光子中存在的信号暗示。使用超过10年的观察结果介绍了Fermi-LAT数据中惯性的测量的最新信息。进行仿真以研究测量值的不确定性，并考虑到由能量依赖性仪器响应及其观察谱以及星际介质的背景引起的暴露结构。需要模拟以准确估计不确定性，并表明以前的不确定性被显着低估。 {\ em fermi} -lat数据的早期分析中的明显信号是不重要的。
A handedness in the arrival directions of high-energy photons from outside our Galaxy can be related to the helicity of an intergalactic magnetic field. Previous estimates by arXiv:1310.4826 and arXiv:1412.3171 showed a hint of a signal present in the photons observed by the Fermi Large Area Telescope (LAT). An update on the measurement of handedness in Fermi-LAT data is presented using more than 10 years of observations. Simulations are performed to study the uncertainty of the measurements, taking into account the structure of the exposure caused by the energy-dependent instrument response and its observing profile, as well as the background from the interstellar medium. The simulations are required to accurately estimate the uncertainty and to show that previously the uncertainty was significantly underestimated. The apparent signal in the earlier analysis of {\em Fermi}-LAT data is rendered non-significant.
