BEXCO - Room F(201/202/203/204)
[GA079] Orphan gamma-ray flares from blob-star interaction in jets of blazars
Massive black holes in active galaxies are surrounded by bulges of both late-type and young luminous stars in nuclear stellar clusters. The luminous stars can enter a jet region which contains fast moving blobs filled with relativistic electrons. We calculate the gamma-ray spectra produced by such electrons in the Inverse Compton $e^pm$ pair cascade process. Such scenario can explain the appearance of the orphan gamma-ray flares in blazars. As an example, we model the high energy emission during a short flare observed from a distant FSRQ PKS 1222+21.