Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray AGN
Fermi/LAT Collaboration, G. Ghisellini, L. Maraschi, F. Tavecchio
TL;DR
This paper reports the discovery of gamma-ray emission from three radio-loud narrow-line Seyfert 1 galaxies, suggesting they form a new class of gamma-ray active galactic nuclei with implications for jet physics and AGN models.
Contribution
It introduces a new class of gamma-ray emitting AGN, expanding the understanding of relativistic jets and AGN unification.
Findings
Gamma-ray emission detected from three new NLS1 galaxies.
These galaxies may constitute a new class of gamma-ray AGN.
Implications for jet physics and AGN unification models.
Abstract
We report the discovery with Fermi/LAT of gamma-ray emission from three radio-loud narrow-line Seyfert 1 galaxies: PKS 1502+036 (z=0.409), 1H 0323+342 (z=0.061) and PKS 2004-447 (z=0.24). In addition to PMN J0948+0022 (z=0.585), the first source of this type to be detected in gamma rays, they may form an emerging new class of gamma-ray active galactic nuclei (AGN). These findings can have strong implications on our knowledge about relativistic jets and the unified model of AGN.
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