D'Ammando, F.F.D'AmmandoGasparrini, DarioDarioGasparrini2020-09-172020-09-172011-07-01https://hdl.handle.net/20.500.13025/2190The Astronomer's Telegram, #3473The Large Area Telescope (LAT), one of two instruments on the Fermi Gamma-ray Space Telescope, has observed since July 1, 2011, an increasing gamma-ray activity from the flat spectrum radio quasar PKS 1510-089 (also known as 1FGL J1512.8-0906, Abdo et al. 2010, ApJS, 188, 405; R.A. = 15h12m50.5329s, Dec. =-09d05m59.828s, J2000, Johnston et al. 1995, AJ, 110, 880) at redshift z = 0.360 (Thompson et al.Gamma Ray>GeVRequest for ObservationsAGNBlazarQuasarFermi LAT detection of a very intense and rapid gamma-ray flare from the blazar PKS 1510-089http://adsabs.harvard.edu/abs/2011ATel.3473....1D2011ATel.3473....1D