Constraining the $\gamma$-ray Emission Region for Fermi-Detected FSRQs by the Seed Photon Approach

Danyi Huang, Ziyan Li, Jiru Liao +5

The location of $\gamma$-ray emitting region in blazars has been an open issue for several decades and is still being debated. We use the Paliya et al. sample of 619 $\gamma$-ray-loud flat-s…