HESS J1427-608: an unusual hard unbroken $\gamma -$ray spectrum in a very wide energy range

Xiao-Lei Guo, Yu-Liang Xin, Neng-Hui Liao +5

We report the detection of a GeV $\gamma$-ray source which is spatially overlapping and thus very likely associated with the unidentified very-high-energy (VHE) $\gamma$-ray source HESS J142…