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RADIO-LOUD NARROW-LINE SEYFERT 1 AS A NEW CLASS OF GAMMA-RAY ACTIVE GALACTIC NUCLEI
Authors
A. Abdo,M. Ackermann
M. Ajello,L. Baldini,J. Ballet,G. Barbiellini,D. Bastieri,K. Bechtol,R. Bellazzini,B. Berenji,E. Bloom,E. Bonamente,A. Borgland,J. Bregeon,A. Brez,M. Brigida,P. Bruel,T. Burnett,G. Caliandro,R. Cameron,P. Caraveo,J. Casandjian,C. Cecchi,Ö. Çelik,A. Chekhtman,C. Cheung,J. Chiang,S. Ciprini,R. Claus,J. Cohen-Tanugi,J. Conrad,S. Cutini,C. Dermer,F. Palma,E. Silva,P. Drell,R. Dubois,D. Dumora,C. Farnier,C. Favuzzi,S. Fegan,W. Focke,L. Foschini,M. Frailis,Y. Fukazawa,P. Fusco,F. Gargano,N. Gehrels,S. Germani,B. Giebels,N. Giglietto,F. Giordano,M. Giroletti,T. Glanzman,G. Godfrey,I. Grenier,J. Grove,L. Guillemot,S. Guiriec,M. Hayashida,E. Hays,D. Horan,R.E. Hugues,G. Jóhannesson,A. Johnson,W. Johnson,M. Kadler,T. Kamae,H. Katagiri,J. Kataoka,M. Kerr,J. Knödlseder,M. Kuss,J. Landé,L. Latronico,F. Longo,F. Loparco,B. Lott,M. Lovellette,P. Lubrano,A. Makeev,M. Mazziotta,W. McConville,J. McEnery,C. Meurer,P. Michelson,W. Mitthumsiri,Tsunefumi Mizuno,C. Monte,M. Monzani,A. Morselli,I. Moskalenko,S. Murgia,P. Nolan,J. Norris,E. Nuss,T. Ohsugi,N. Omodei,E. Orlando,J. Ormes,V. Pelassa,M. Pepé,M. Persic,M. Pesce-Rollins,F. Piron,T. Porter,S. Rainò,R. Rando,M. Razzano,Lynn Rochester,A. Rodriguez,F. Ryde,H. Sadrozinski,R. Sambruna,A. Sander,P. Parkinson,J. Scargle,C. Sgrò,P. Smith,G. Spandre,P. Spinelli,M. Strickman,D. Suson,G. Tagliaferri,H. Takahashi,T. Takahashi,T. Tanaka,J. Thayer,D. Thompson,L. Tibaldo,O. Tibolla,D. Torres,G. Tosti,A. Tramacere,Y. Uchiyama,T. Usher,V. Vasileiou,N. Vilchez,V. Vitale,A. Waite,Pengfei Wang,B. Winer,K. Wood,T. Ylinen,M. Ziegler,G. Ghisellini,L. Maraschi,F. Tavecchio,Luca Baldini
+147 authors
,R. HughesJournal
Published
Dec 4, 2009
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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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