Fermi Large Area Telescope CollaborationCiprini, StefanoStefanoCiprini2020-09-172020-09-172017-07-01https://hdl.handle.net/20.500.13025/5104The Astronomer's Telegram, No. 10584The Large Area Telescope (LAT), one of two instruments on the Fermi Gamma-ray Space Telescope, has observed a flare in gamma rays from a source positionally consistent with the flat spectrum radio quasar S4 0444+63 (also known as TXS 0444+634, GB6 J0449+6332 and 2FAV J0449+63.5, Abdollahi et al. 2017, ApJS, accepted), with radio coordinates, (J2000.0), R.A. 72.34717 deg, Dec. 63.53595 deg (Fey et al. 2004, AJ, 127, 3587).Request for ObservationsAGNBlazarQuasarhttp://adsabs.harvard.edu/abs/2017ATel.10584...1C2017ATel.10584...1C