HAWC J2227+610 and Its Association with G106.3+2.7, a New Potential Galactic PeVatron
HAWC J2227+610 and Its Association with G106.3+2.7, a New Potential Galactic PeVatron
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DOI：
10.3847/2041-8213/ab96cc
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发表时间：
2020-06-01
影响因子：
7.9
通讯作者：
Alvarez, J. D.
中科院分区：
文献类型：
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作者：
Albert, A.;Alfaro, R.;Alvarez, J. D.
我们利用高海拔水切列诺夫伽玛射线天文台（HAWC）观测到来自HAWC J2227+610的100 TeV以上的高能伽玛射线发射。结合我们的观测结果和先前发表的非常高能辐射成像望远镜阵列系统（VERTIAS）的结果，我们将HAWC J2227+610的伽马射线发射解释为质子发射的伽马射线，其截止能量下限为800 TeV。最有可能的质子来源是与之相关的超新星遗迹G106.3+2.7，这使它成为银河系PeVatron的一个很好的候选者。然而，观测到的发射的纯轻子起源目前不能排除。
We present the detection of very-high-energy gamma-ray emission above 100 TeV from HAWC J2227+610 with the High-Altitude Water Cherenov Gamma-Ray Observatory (HAWC) observatory. Combining our observations with previously published results by the Very Energetic Radiation Imaging Telescope Array System (VERTIAS), we interpret the gamma-ray emission from HAWC J2227+610 as emission from protons with a lower limit in their cutoff energy of 800 TeV. The most likely source of the protons is the associated supernova remnant G106.3+2.7, making it a good candidate for a Galactic PeVatron. However, a purely leptonic origin of the observed emission cannot be excluded at this time.