Fermi Gamma-ray Space Telescope

Detecting Gamma-ray Emission from Young Radio Sources

M. Orienti
F. D'Ammando, M. Giroletti, on behalf of the Fermi-LAT Collaboration, D. Dallacasa

Abstract:

Intrinsically compact and two-sided radio sources are considered to be the young version of Fanaroff-Riley type I and type II radio galaxies, with typical sizes smaller than 1 kpc and ages of the order of a few thousand years. Before the launch of the Fermi satellite, young radio sources were predicted to emerge as a possible new gamma-ray emitting population detectable by the Large Area Telescope. After more than 6 years of Fermi operation the question of young radio sources as gamma-ray emitting objects still remains open. In this contribution we present results of Pass 8 analysis of a sample of bona-fide young radio sources and we discuss the physical scenarios contributing to the high-energy emission detected so far.