FERMI OBSERVATIONS OF TeV-SELECTED ACTIVE GALACTIC NUCLEI

Abdo, Aa; Ackermann, M; Ajello, M; Atwood, Wb; Axelsson, M; Baldini, Luca; Ballet, J; Barbiellini, G; Baring, Mg; Bastieri, D; Bechtol, K; Bellazzini, R; Berenji, B; Bloom, Ed; Bonamente, E; Borgland, Aw; Bregeon, J; Brez, A; Brigida, M; Bruel, P; Burnett, Th; Caliandro, Ga; Cameron, Ra; Caraveo, Pa; Casandjian, Jm; Cavazzuti, E; Cecchi, C; Celik, O; Chekhtman, A; Cheung, Cc; Chiang, J; Ciprini, S; Claus, R; Cohen Tanugi, J; Cominsky, Lr; Conrad, J; Cutini, S; de Angelis, A; de Palma, F; di Bernardo, G; Silva, Ede; Drell, Ps; Drlica Wagner, A; Dubois, R; Dumora, D; Farnier, C; Favuzzi, C; Fegan, Sj; Finke, J; Focke, Wb; Fortin, P; Foschini, L; Frailis, M; Fukazawa, Y; Funk, S; Fusco, P; Gargano, F; Gasparrini, D; Gehrels, N; Germani, S; Giavitto, G; Giebels, B; Giglietto, N; Giommi, P; Giordano, F; Glanzman, T; Godfrey, G; Grenier, Ia; Grondin, Mh; Grove, Je; Guillemot, L; Guiriec, S; Hanabata, Y; Hayashida, M; Hays, E; Horan, D; Hughes, Re; Jackson, Ms; Johannesson, G; Johnson, As; Johnson, Rp; Johnson, Wn; Kamae, T; Katagiri, H; Kataoka, J; Kawai, N; Kerr, M; Knodlseder, J; Kocian, Ml; Kuss, M; Lande, J; Latronico, L; Lemoine Goumard, M; Longo, F; Loparco, F; Lott, B; Lovellette, Mn; Lubrano, P; Madejski, Gm; Makeev, A; Mazziotta, Mn; McConville, W; McEnery, Je; Meurer, C; Michelson, Pf; Mitthumsiri, W; Mizuno, T; Moiseev, Aa; Monte, C; Monzani, Me; Morselli, A; Moskalenko, Iv; Murgia, S; Nolan, Pl; Norris, Jp; Nuss, E; Ohsugi, T; Omodei, N; Orlando, E; Ormes, Jf; Ozaki, M; Paneque, D; Panetta, Jh; Parent, D; Pelassa, V; Pepe, M; Pesce Rollins, M; Piron, F; Porter, Ta; Raino, S; Rando, R; Razzano, Massimiliano; Reimer, A; Reimer, O; Reposeur, T; Reyes, Lc; Ritz, S; Rochester, Ls; Rodriguez, Ay; Roth, M; Ryde, F; Sadrozinski, Hfw; Sanchez, D; Sander, A; Parkinson, Pms; Scargle, Jd; Schalk, Tl; Sellerholm, A; Sgro, C; Shaw, Ms; Siskind, Ej; Smith, Da; Smith, Pd; Spandre, G; Spinelli, P; Strickman, Ms; Suson, Dj; Tajima, H; Takahashi, H; Takahashi, T; Tanaka, T; Tanaka, Y; Thayer, Jb; Thayer, Jg; Thompson, Dj; Tibaldo, L; Torres, Df; Tosti, G; Tramacere, A; Uchiyama, Y; Usher, Tl; Vasileiou, V; Vilchez, N; Vitale, V; Waite, Ap; Wang, P; Winer, Bl; Wood, Ks; Ylinen, T; Ziegler, M.

doi:10.1088/0004-637X/707/2/1310

We report on observations of TeV-selected active galactic nuclei (AGNs) made during the first 5.5 months of observations with the Large Area Telescope (LAT) on-board the Fermi Gamma-ray Space Telescope (Fermi). In total, 96 AGNs were selected for study, each being either (1) a source detected at TeV energies (28 sources) or (2) an object that has been studied with TeV instruments and for which an upper limit has been reported (68 objects). The Fermi observations show clear detections of 38 of these TeV-selected objects, of which 21 are joint GeV-TeV sources, and 29 were not in the third EGRET catalog. For each of the 38 Fermi-detected sources, spectra and light curves are presented. Most can be described with a power law of spectral index harder than 2.0, with a spectral break generally required to accommodate the TeV measurements. Based on an extrapolation of the Fermi spectrum, we identify sources, not previously detected at TeV energies, which are promising targets for TeV instruments. Evidence for systematic evolution of the γ-ray spectrum with redshift is presented and discussed in the context of interaction with the extragalactic background light.

Autori interni:	Abdo AA Ackermann M Ajello M Atwood WB Axelsson M BALDINI, LUCA Ballet J Barbiellini G Baring MG Bastieri D Bechtol K Bellazzini R Berenji B Bloom ED Bonamente E Borgland AW Bregeon J Brez A Brigida M Bruel P Burnett TH Caliandro GA Cameron RA Caraveo PA Casandjian JM Cavazzuti E Cecchi C Celik O Chekhtman A Cheung CC Chiang J Ciprini S Claus R Cohen Tanugi J Cominsky LR Conrad J Cutini S de Angelis A de Palma F di Bernardo G Silva EDE Drell PS Drlica Wagner A Dubois R Dumora D Farnier C Favuzzi C Fegan SJ Finke J Focke WB Fortin P Foschini L Frailis M Fukazawa Y Funk S Fusco P Gargano F Gasparrini D Gehrels N Germani S Giavitto G Giebels B Giglietto N Giommi P Giordano F Glanzman T Godfrey G Grenier IA Grondin MH Grove JE Guillemot L Guiriec S Hanabata Y Hayashida M Hays E Horan D Hughes RE Jackson MS Johannesson G Johnson AS Johnson RP Johnson WN Kamae T Katagiri H Kataoka J Kawai N Kerr M Knodlseder J Kocian ML Kuss M Lande J Latronico L Lemoine Goumard M Longo F Loparco F Lott B Lovellette MN Lubrano P Madejski GM Makeev A Mazziotta MN McConville W McEnery JE Meurer C Michelson PF Mitthumsiri W Mizuno T Moiseev AA Monte C Monzani ME Morselli A Moskalenko IV Murgia S Nolan PL Norris JP Nuss E Ohsugi T Omodei N Orlando E Ormes JF Ozaki M Paneque D Panetta JH Parent D Pelassa V Pepe M Pesce Rollins M Piron F Porter TA Raino S Rando R RAZZANO, MASSIMILIANO Reimer A Reimer O Reposeur T Reyes LC Ritz S Rochester LS Rodriguez AY Roth M Ryde F Sadrozinski HFW Sanchez D Sander A Parkinson PMS Scargle JD Schalk TL Sellerholm A Sgro C Shaw MS Siskind EJ Smith DA Smith PD Spandre G Spinelli P Strickman MS Suson DJ Tajima H Takahashi H Takahashi T Tanaka T Tanaka Y Thayer JB Thayer JG Thompson DJ Tibaldo L Torres DF Tosti G Tramacere A Uchiyama Y Usher TL Vasileiou V Vilchez N Vitale V Waite AP Wang P Winer BL Wood KS Ylinen T Ziegler M. mostra contributor esterni nascondi contributor esterni
Autori:	Abdo AA; Ackermann M; Ajello M; Atwood WB; Axelsson M; Baldini L; Ballet J; Barbiellini G; Baring MG; Bastieri D; Bechtol K; Bellazzini R; Berenji B; Bloom ED; Bonamente E; Borgland AW; Bregeon J; Brez A; Brigida M; Bruel P; Burnett TH; Caliandro GA; Cameron RA; Caraveo PA; Casandjian JM; Cavazzuti E; Cecchi C; Celik O; Chekhtman A; Cheung CC; Chiang J; Ciprini S; Claus R; Cohen-Tanugi J; Cominsky LR; Conrad J; Cutini S; de Angelis A; de Palma F; di Bernardo G; Silva EDE; Drell PS; Drlica-Wagner A; Dubois R; Dumora D; Farnier C; Favuzzi C; Fegan SJ; Finke J; Focke WB; Fortin P; Foschini L; Frailis M; Fukazawa Y; Funk S; Fusco P; Gargano F; Gasparrini D; Gehrels N; Germani S; Giavitto G; Giebels B; Giglietto N; Giommi P; Giordano F; Glanzman T; Godfrey G; Grenier IA; Grondin MH; Grove JE; Guillemot L; Guiriec S; Hanabata Y; Hayashida M; Hays E; Horan D; Hughes RE; Jackson MS; Johannesson G; Johnson AS; Johnson RP; Johnson WN; Kamae T; Katagiri H; Kataoka J; Kawai N; Kerr M; Knodlseder J; Kocian ML; Kuss M; Lande J; Latronico L; Lemoine-Goumard M; Longo F; Loparco F; Lott B; Lovellette MN; Lubrano P; Madejski GM; Makeev A; Mazziotta MN; McConville W; McEnery JE; Meurer C; Michelson PF; Mitthumsiri W; Mizuno T; Moiseev AA; Monte C; Monzani ME; Morselli A; Moskalenko IV; Murgia S; Nolan PL; Norris JP; Nuss E; Ohsugi T; Omodei N; Orlando E; Ormes JF; Ozaki M; Paneque D; Panetta JH; Parent D; Pelassa V; Pepe M; Pesce-Rollins M; Piron F; Porter TA; Raino S; Rando R; Razzano M; Reimer A; Reimer O; Reposeur T; Reyes LC; Ritz S; Rochester LS; Rodriguez AY; Roth M; Ryde F; Sadrozinski HFW; Sanchez D; Sander A; Parkinson PMS; Scargle JD; Schalk TL; Sellerholm A; Sgro C; Shaw MS; Siskind EJ; Smith DA; Smith PD; Spandre G; Spinelli P; Strickman MS; Suson DJ; Tajima H; Takahashi H; Takahashi T; Tanaka T; Tanaka Y; Thayer JB; Thayer JG; Thompson DJ; Tibaldo L; Torres DF; Tosti G; Tramacere A; Uchiyama Y; Usher TL; Vasileiou V; Vilchez N; Vitale V; Waite AP; Wang P; Winer BL; Wood KS; Ylinen T; Ziegler M
Titolo:	FERMI OBSERVATIONS OF TeV-SELECTED ACTIVE GALACTIC NUCLEI
Anno del prodotto:	2009
Digital Object Identifier (DOI):	10.1088/0004-637X/707/2/1310
Appare nelle tipologie:	1.1 Articolo in rivista

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