Analysis of data from the Fermi Large Area Telescope (LAT) in the region of the supernova remnant G78.2+2.1 reveals an excess at the position of the TeV source VER J2019+407. The GeV source is extended with a hard spectrum and it is likely the counterpart of the TeV source. The spectrum of the LAT emission connects smoothly with that of VER J2019+407, and the overall GeV--TeV spectrum is best described by a broken power-law with indices 1.8 and 2.5 below and above a break energy of 71 GeV. Several scenarios are considered to explain the nature of this unidentified gamma ray source.
@article{arxiv.1701.01861,
title = {Fermi LAT observation of VER J2019+407},
author = {Miguel Araya and Nissim Fraija},
journal= {arXiv preprint arXiv:1701.01861},
year = {2017}
}
Comments
Published in the proceedings of the conference 6th International Meeting on High-Energy Gamma-Ray Astronomy (Gamma2016), Heidelberg, Germany