Probing AGN Broad Line Regions with LAT Observations of FSRQs

The GLAST Large Area Telescope (LAT) is expected to detect gamma‐ray emission from over a thousand active galaxies, many of which will be flat spectrum radio quasars (FSRQs). A commonly assumed ingredient of leptonic models of FRSQs is the contribution to the gamma‐ray flux from external inverse‐Compton (EIC) scattering of photons from the broad line region (BLR) material by relativistic electrons and positrons in the jet. Here we explore the effect of the BLR geometry on the high‐energy emission from FSRQs.