Fermi-LAT detection of increasing of gamma-ray activity of BL Lacertae
Author(s)
Cutini, Sara
Date Issued
2012-04-01
Mission(s)
Abstract
The Large Area Telescope (LAT), one of the instruments on board the Fermi Gamma-ray Space Telescope, has observed an increasing gamma-ray flux from a source positionally coincident with BL Lacertae (VLBI position R.A.=22 02 43.29137 Dec.=+42 16 39.9799, J2000 from Beasley et al. 2002, ApJS, 141, 13; with a z=0.0686, Vermeulen et al., 1995, ApJ, 452, L5; more information in Abdo et al. 2011, ApJ, 730, 101).