HAWC J2227+610 and Its Association with G106.3+2.7, a New Potential Galactic PeVatron
Document Type
Article
Publication Date
6-20-2020
Department
Department of Physics
Abstract
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.
Publication Title
Astrophysical Journal Letters
Recommended Citation
Albert, A.,
Alfaro, R.,
Alvarez, C.,
Camacho, J.,
Arteaga-Velázquez, J.,
Arunbabu, K.,
Rojas, D.,
Solares, H.,
Baghmanyan, V.,
Belmont-Moreno, E.,
Fleischhack, H.,
Hona, B.,
Huang, D.,
&
Hüntemeyer, P.
(2020).
HAWC J2227+610 and Its Association with G106.3+2.7, a New Potential Galactic PeVatron.
Astrophysical Journal Letters,
896(2).
http://doi.org/10.3847/2041-8213/ab96cc
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/2102
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Publisher's Statement
© 2020 The American Astronomical Society. Publisher’s version of record: https://doi.org/10.3847/2041-8213/ab96cc