Gamma-ray发射扩展区的匹配方法研究
Matched Runs Method to Study Extended Regions of Gamma-ray Emission
摘要：
成像大气切伦科夫望远镜，如甚高能辐射成像望远镜阵列系统（VERITAS），是唯一适合解决的详细形态ofextended区域的伽马射线发射。然而，由于背景估计的困难，标准VERITAS数据分析技术对跨越VERITAS视场（3.5°）的伽马射线源的灵敏度不足。为了分析这种半径为0.5°到大于2°的空间扩展源，我们开发了匹配的方法。该方法利用已知点源在相似观测条件下的匹配分离观测值，导出扩展源观测值的背景估计。我们的技术已被验证的应用程序归档VERITAS数据。在这里，我们提出了一个总结的匹配RunsMethod和多个验证研究不同的伽马射线源使用VERITAS数据。
英文摘要：
Imaging atmospheric Cherenkov telescopes, such as the Very Energetic Radiation Imaging Tele-scope Array System (VERITAS), are uniquely suited to resolve the detailed morphology ofextended regions of gamma-ray emission. However, standard VERITAS data analysis techniques have insufficient sensitivity to gamma-ray sources spanning the VERITAS field of view (3.5°),due to difficulties with background estimation. For analysis of such spatially extended sources with 0.5° to greater than 2° radius, we developed the Matched Runs Method. This method derives background estimations for observations of extended sources using matched separate observations of known point sources taken under similar observing conditions. Our technique has been validated by application to archival VERITAS data. Here we present a summary of the Matched RunsMethod and multiple validation studies on different gamma-ray sources using VERITAS data.
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