EGRET望远镜观测各向同性 diffuse gamma 射线背景
摘要
各向同性 diffuse gamma 射线背景(IDGRB)在30-10,000 MeV波段最早于上世纪70年代初通过SAS-2仪器测量的数据中被报告。对Energetic Gamma Ray Experiment Telescope(EGRET)在Cocre Gamma Ray Observatory(CGRO)上运行的过去4年记录的数据进行分析,以提取迄今为止最佳的IDGRB测量结果。 presented了对EGRET仪器背景的广泛分析,以证明可以从EGRET数据中提取出无受污染的数据集。 presented了高纬度银河diffuse前景辐射的模型,并确认了IDGRB的存在。 presented了该背景的空间和光谱分析。此外, performed at high galactic latitudes point source analysis to揭示一群外星系源的存在。 examined this population的特征并报告了其通量分布的模型。 finally, addressed the question of whether the IDGRB is composed of unresolved point sources using fluctuation analysis. finally, examined possible future directions for gamma ray astronomy through simulations of a future gamma ray telescope: the Gamma-ray Large Area Space Telescope(GLAST)。 The GLAST baseline design is described and its scientific performance is evaluated. demonstrated GLAST能够检测1,000-10,000个新的外星系源,并考虑了其对IDGRB研究的可能影响。
引用
@article{arxiv.astro-ph/0201515,
title = {Observations of the Isotropic Diffuse Gamma-ray Background with the EGRET Telescope},
author = {T. D. Willis},
journal= {arXiv preprint arXiv:astro-ph/0201515},
year = {2007}
}
备注
Stanford University Ph.D. dissertation from 1996. Contains some material that is of interest, although the description of GLAST is obsolete. 218 pages