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  Observations of 54 Active Galactic Nuclei with the HEGRA System of Cherenkov Telescopes.

Aharonian, F. A., Akhperjanian, A. G., Beilicke, M., Bernlöhr, K., Bojahr, H., Bolz, O., et al. (2004). Observations of 54 Active Galactic Nuclei with the HEGRA System of Cherenkov Telescopes. Astronomy & Astrophysics, 421(2), 529-537. doi:10.1051/0004-6361:20035764.

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Aharonian, F. A.1, Autor           
Akhperjanian, A. G.1, Autor           
Beilicke, M.1, Autor           
Bernlöhr, K.1, Autor           
Bojahr, H.2, Autor
Bolz, O.1, Autor           
Börst, H.2, Autor
Coarasa, T.2, Autor
Contreras, J. L.2, Autor
Cortina, J.2, Autor
Denninghoff, S.2, Autor
Fonseca, V.2, Autor
Girma, M.1, Autor           
Gotting, N.2, Autor
Heinzelmann, G.2, Autor
Hermann, G.1, Autor           
Heusler, A.1, Autor           
Hofmann, W.1, Autor           
Horns, D.1, Autor           
Jung, I.1, Autor           
Kankanyan, R.1, Autor           Kestel, M.2, AutorKettler, J., AutorKohnle, A.1, Autor           Konopelko, A.3, Autor           Kornmeyer, H.2, AutorKranich, D.2, AutorKrawczynski, H.1, Autor           Lampeitl, H.1, Autor           Lopez, M.2, AutorLorenz, E.2, AutorLucarelli, F.2, AutorMang, O.2, AutorMeyer, H.2, AutorMirzoyan, R.2, AutorMoralejo, A.2, AutorOna, E.2, AutorPanter, M.1, Autor           Plyasheshnikov, A.1, Autor           Pühlhofer, G.1, Autor           Rauterberg, G.2, AutorReyes, R.2, AutorRhode, W.2, AutorRipken, J.2, AutorRohring, A.2, AutorRowell, G. P.1, Autor           Sahakian, V.2, AutorSamorski, M.2, AutorSchilling, M.1, Autor           Schweizer, T.2, AutorSevilla, I.2, AutorSiems, M.2, AutorSobczynska, D.2, AutorStamm, W.2, AutorTluczykont, M.2, AutorTonello, N.1, Autor           Vitale, V.1, Autor           Völk, H.J.3, Autor           Wagner, R.M.1, Autor           Wiedner, C.A.1, Autor           Wittek, W.1, Autor            mehr..
Affiliations:
1Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              
2Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany; Univ Complutense, Fac Ciencias Fis, E-28040 Madrid, Spain; Univ Hamburg, Inst Phys Expt, D-22761 Hamburg, Germany; Univ Kiel, Inst Expt & Angew Phys, D-24118 Kiel, Germany; Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany; Yerevan Phys Inst, Yerevan 375036, Armenia, ou_persistent22              
3Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907548              

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Schlagwörter: gamma rays: observations -- galaxies: active -- galaxies: BL Lacertae objects: individual: 1ES 2344+514 -- BL Lacertae objects: individual: 1ES 1959+650 -- BL Lacertae objects: individual: H 1426+428 -- galaxies: individual: M 87
 Zusammenfassung: A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic system of Cherenkov Telescopes between 1996 and 2002 in the TeV energy regime. The observations were motivated by the positive results obtained for Mkn 421 and Mkn 501. The distances of the selected objects vary over a large range of redshifts between z = 0.004 and z = 0.7. Among the observed AGN are the now-established TeV-emitting BL Lac type objects H 1426+428 and 1ES 1959+650. Furthermore the BL Lac object 1ES 2344+514 and the radio galaxy M 87 show evidence for a signal on a 4 level. The observation of 1ES 2344+514 together with the Whipple results firmly establishes this AGN as a TeV source. Several objects (PKS 2155-304, BL Lacertae, 3C 066A) that have been claimed as TeV -ray emitters by other groups are included in this data sample but could not be confirmed using data analysed here. The upper limits from several AGN included in this analysis are compared with predictions in the frame-work of SSC models.

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Sprache(n): eng - English
 Datum: 2004-07-02
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 111769
DOI: 10.1051/0004-6361:20035764
 Art des Abschluß: -

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Titel: Astronomy & Astrophysics
  Alternativer Titel : Astron. Astrophys.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 421 (2) Artikelnummer: - Start- / Endseite: 529 - 537 Identifikator: -