• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Cosmic Ray Conference >Data analysis method for the search of point sources of gamma rays with the HAGAR telescope array
【24h】

Data analysis method for the search of point sources of gamma rays with the HAGAR telescope array

机译：用HAGAR望远镜阵列搜索伽玛射线点源的数据分析方法

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The High Altitude GAmma-Ray (HAGAR) experiment is the highest altitude atmospheric Cherenkov sampling array, set up at 4300 m amsl in the Himalayas (Northern India). It constitutes 7 telescopes, each one with seven 90 cm-diameter mirrors, a field of view of 3 degrees, and was designed to reach a relatively low threshold (currently around 200 GeV) with quite a low total mirror area (31 m2). In order to remove the strong isotropic background of charged cosmic rays, data are collected by tracking separately On-source followed by Off-source regions, or vice-versa. Typical observation period is about 30-40 min. On-Off data pairs are then selected according to quality parameters such as stability of the trigger rate and the comparison of average trigger rates between On and Off-source data sets. Signal extraction from point sources is done by performing analysis cuts on the count rate excess, rejecting off-axis events. Validation of method and systematics are evaluated through the analysis of fake sources (Off-Off pairs) located at similar declination as the observed point sources. Spurious signal, if any, would show up in this study.
机译：高海拔伽玛射线（HAGAR）实验是最高海拔的大气Cherenkov采样阵列，建立在喜马拉雅山（印度北部）的4300 m amsl。它由7台望远镜组成，每台望远镜都有7个90厘米直径的镜子，视野为3度，旨在达到相对较低的阈值（目前约为200 GeV），并且镜面总面积非常小（31平方米）。为了消除带电宇宙射线的强各向同性本底，通过分别跟踪“源上”之后是“源外​​”区域（反之亦然）来收集数据。典型的观察期约为30-40分钟。然后根据质量参数（例如触发率的稳定性以及“源”与“源”数据集之间的平均触发率的比较）选择“开-关”数据对。从点源提取信号是通过对计数率超出部分执行分析切割来完成的，从而拒绝离轴事件。方法和系统的验证通过对假源（Off-Off对）的分析进行评估，这些假源与观测点源的磁偏角相似。杂散信号（如果有）将出现在此研究中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号