We report the detection of a new gamma-ray source in the Fermi-LAT sky using a source detection tool based on the Minimal Spanning Tree algorithm. The source, not reported in previous LAT catalogues but very recently observed in the X-rays and optical bands, is characterized by an increasing gamma-ray activity in 2012 June-September, reaching a weekly peak flux of (3.3+-0.6)*10^-7 photons cm^-2 s^-1. A search for a possible counterpart provides indication that it can be associated with the radio source NVSS J141828+354250 whose optical SDSS colours are typical of a blazar.
@article{arxiv.1212.6868,
title = {A new flaring high energy gamma-ray source},
author = {E. Bernieri and R. Campana and E. Massaro and A. Paggi and A. Tramacere},
journal= {arXiv preprint arXiv:1212.6868},
year = {2015}
}
Comments
4 pages, 3 figures. Accepted for publication in Astronomy & Astrophysics