# The International Cosmic Ray Conference 2017

12-20 July 2017
BEXCO
Asia/Seoul timezone
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# Contribution

BEXCO - Room F(201/202/203/204)

# [GA079] Orphan gamma-ray flares from blob-star interaction in jets of blazars

## Speakers

• Piotr BANASINSKI

## Description

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.