The 2HWC HAWC Observatory Gamma-Ray Catalog
The 2HWC HAWC Observatory Gamma-Ray Catalog
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DOI：
10.3847/1538-4357/aa7556
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发表时间：
2017-07-01
影响因子：
4.9
通讯作者：
Zhou, H.
中科院分区：
文献类型：
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作者：
Abeysekara, A. U.;Albert, A.;Zhou, H.
我们给出了利用新建成的高海拔水切伦科夫天文台(HAWC)的数据实现的第一个TeV伽马射线源目录。它是目前运行中最灵敏的广视场TeV望远镜，一年的探测灵敏度类似于蟹状星云流量的5%-10%。它具有瞬时视场>；1.5sr和>；90%占空比，可持续测量和监测天空中数百GeV到数十TeV之间的伽马射线能量。HAWC位于墨西哥，北纬19度，于2015年3月完工。在这里，我们展示了2HWC星表，这是使用完整的HAWC探测器进行的第一次源搜索的结果。通过507天的数据实现，这是迄今为止对这么大一部分天空进行的最敏感的TeV调查。共检测到39个震源，由于背景波动，预计误检数量为0.5个。在这些信号源中，有19个是与以前已知的TeV信号源没有关联的新信号源(关联标准：
We present the first catalog of TeV gamma-ray sources realized with data from the newly completed High Altitude Water Cherenkov Observatory (HAWC). It is the most sensitive wide field-of-view TeV telescope currently in operation, with a one-year survey sensitivity of similar to 5%-10% of the flux of the Crab Nebula. With an instantaneous field of view >1.5 sr and >90% duty cycle, it continuously surveys and monitors the sky for gamma-ray energies between hundreds of GeV and tens of TeV. HAWC is located in Mexico, at a latitude of 19 degrees N, and was completed in 2015 March. Here, we present the 2HWC catalog, which is the result of the first source search performed with the complete HAWC detector. Realized with 507 days of data, it represents the most sensitive TeV survey to date for such a large fraction of the sky. A total of 39 sources were detected, with an expected number of false detections of 0.5 due to background fluctuation. Out of these sources, 19 are new sources that are not associated with previously known TeV sources (association criteria: