Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: HAWC J2227+610 and its association with G106.3+2.7, a new potential
  Galactic PeVatron   We present the detection of VHE gamma-ray emission above 100 TeV from HAWC
J2227+610 with the HAWC observatory. Combining our observations with previously
published results by VERITAS, 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.

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The categories of this paper are: atom-ph
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The categories of this paper are: math
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The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
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The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: q-alg