Dissecting the region around IceCube-170922A: the blazar TXS 0506+056 as the first cosmic neutrino source Theo Glauch, Paolo Padovani, Paolo Giommi, Elisa Resconi, Bruno Arsioli, Narek Sahakyan and Matthias Huber EPJ Web Conf., 207 (2019) 02003 Published online: 10 May 2019 DOI: 10.1051/epjconf/201920702003