Author(s): A. Abdo A., Ackermann M., Ajello M., Baldini L., Ballet J., Barbiellini G., Bastieri D., Bechtol K., Bellazzini R., Berenji B., Bregeon J., Bruel P., Casandjian J.M., Cohen-Tanugi J., Dumora D., Farnier C., Fegan S.J., Giebels B., Grenier I. A., Guillemot L., Guiriec Sylvain, Horan D., Knödlseder J., Lott B., Nuss E., Pelassa V., Piron F., Sgrò C., Tibaldo L., Vilchez N.
(Article) Published:
The Astrophysical Journal / The Astrophysical Journal Letters, vol. 707 p.L142-L147 (2009)
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Ref HAL: in2p3-00442839_v1
Ref Arxiv: 0911.3485
DOI: 10.1088/0004-637X/707/2/L142
Ref. & Cit.: NASA ADS
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188 citations
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.
Comments: 16 pages, 1 figure. Accepted for publication on ApJ Letters. Corresponding author: Luigi Foschini