%0 Journal Article
%T HAWC J2227+610 and Its Association with G106.3+2.7, a New Potential Galactic PeVatron
%A HAWC Collaboration (Albert, A. et al
%A Salesa Greus, F.
%J Astrophysical Journal Letters
%D 2020
%V 896
%N 2
%I Iop Publishing Ltd
%@ 2041-8205
%G English
%F HAWCCollaborationAlbert+SalesaGreus2020
%O WOS:000542724600001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4445), last updated on Thu, 09 Jul 2020 11:23:50 +0000
%X 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.
%K Gamma-ray astronomy
%K Gamma-ray sources
%K Gamma-rays
%K Cosmic ray sources
%K Supernova remnants
%K Gamma-ray observatories
%R 10.3847/2041-8213/ab96cc
%U https://arxiv.org/abs/2005.13699
%U https://doi.org/10.3847/2041-8213/ab96cc
%P L29 - 9pp