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arXiv · 1209.4776

Gamma-ray emission from Narrow-Line Seyfert 1 Galaxies and implications on the jets unification

Luigi Foschini
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Abstract

The recent discovery by Fermi/LAT of high-energy (E>100 MeV) gamma rays from Narrow-Line Seyfert 1 Galaxies (NLS1s) made evident the existence of a third class of gamma-ray emitting Active Galactic Nuclei (AGN), after blazars and radio galaxies. It is now possible to study a rather unexplored range of low masses (10^6-8 Msun) and high accretion rates (up to the Eddington limit) of AGN with relativistic jets. A comparison with the jet emission from Galactic compact objects shows some striking similarities, indicating that NLS1s are the low-mass counterpart of blazars as neutron stars are the low-mass jet systems analogue of stellar mass black holes.

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Luigi Foschini. 2012-09-21. Gamma-ray emission from Narrow-Line Seyfert 1 Galaxies and implications on the jets unification. https://doi.org/10.1063/1.4772325

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