Point source search techniques in ultra high energy gamma ray astronomy

Point source search techniques in ultra high energy gamma ray astronomy
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DOI：
10.1016/0168-9002(93)90677-a
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发表时间：
1993-05
期刊：
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
影响因子：
1.4
通讯作者：
D. Alexandreas;D. Berley;S. Biller;G. Dion;J. Goodman;T. Haines;C. M. Hoffman;E. Horch;X.-Q. Lu;C. Sinnis;G. Yodh;W. Zhang
D. Alexandreas;D. Berley;S. Biller;G. Dion;J. Goodman;T. Haines;C. M. Hoffman;E. Horch;X.-Q. Lu;C. Sinnis;G. Yodh;W. Zhang
中科院分区：
物理与天体物理3区
文献类型：
--
作者：
D. Alexandreas;D. Berley;S. Biller;G. Dion;J. Goodman;T. Haines;C. M. Hoffman;E. Horch;X.-Q. Lu;C. Sinnis;G. Yodh;W. Zhang

文献摘要

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寻找超高能(UHE)伽马射线的点天体物理源受到来自各向同性宇宙射线的大量背景事件的困扰。一些用于估计来自可能源的方向的背景事件的预期数量的方法被发现包含偏差。描述了避免该问题的搜索技术。还讨论了如何优化搜索对点源排放的敏感度。
Searches for point astrophysical sources of ultra high energy (UHE) gamma rays are plagued by large numbers of background events from isotropic cosmic rays. Some of the methods that have been used to estimate the expected number of background events coming from the direction of a possible source are found to contain biases. Search techniques that avoid this problem are described. There is also a discussion of how to optimize the sensitivity of a search to emission from a point source.