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arxiv: 2005.13699 · v1 · pith:AOSFQOITnew · submitted 2020-05-27 · 🌌 astro-ph.HE

HAWC J2227+610 and its association with G106.3+2.7, a new potential Galactic PeVatron

classification 🌌 astro-ph.HE
keywords emissionhawcj2227g106galacticgamma-raypevatronprotons
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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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