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@ARTICLE{Abdalla:417235,
      author       = {Abdalla, H. and Abramowski, A. and Aharonian, F. and Ait
                      Benkhali, F. and Angüner, E. O. and Arakawa, M. and Armand,
                      C. and Arrieta, M. and Backes, M. and Balzer, A. and
                      Barnard, M. and Becherini, Y. and Becker Tjus, J. and Berge,
                      D. and Bernhard, S. and Bernlöhr, K. and Blackwell, R. and
                      Böttcher, M. and Boisson, C. and Bolmont, J. and Bonnefoy,
                      S. and Bordas, P. and Bregeon, J. and Brun, F. and Brun, P.
                      and Bryan, M. and Büchele, M. and Bulik, T. and Capasso, M.
                      and Caroff, S. and Carosi, A. and Casanova, S. and Cerruti,
                      M. and Chakraborty, N. and Chaves, R. C. G. and Chen, A. and
                      Chevalier, J. and Colafrancesco, S. and Condon, B. and
                      Conrad, J. and Davids, I. D. and Decock, J. and Deil, C. and
                      Devin, J. and deWilt, P. and Dirson, L. and Djannati-Ataï,
                      A. and Donath, A. and Drury, L. O’C. and Dyks, J. and
                      Edwards, T. and Egberts, K. and Emery, G. and Ernenwein,
                      J.-P. and Eschbach, S. and Farnier, C. and Fegan, S. and
                      Fernandes, M. V. and Fiasson, A. and Fontaine, G. and Funk,
                      S. and Füßling, M. and Gabici, S. and Gallant, Y. A. and
                      Garrigoux, T. and Gaté, F. and Giavitto, G. and Glawion, D.
                      and Glicenstein, J. F. and Gottschall, D. and Grondin, M.-H.
                      and Hahn, J. and Haupt, M. and Hawkes, J. and Heinzelmann,
                      G. and Henri, G. and Hermann, G. and Hinton, J. A. and
                      Hofmann, W. and Hoischen, C. and Holch, T. L. and Holler, M.
                      and Horns, D. and Ivascenko, A. and Iwasaki, H. and
                      Jacholkowska, A. and Jamrozy, M. and Jankowsky, D. and
                      Jankowsky, F. and Jingo, M. and Jouvin, L. and
                      Jung-Richardt, I. and Kastendieck, M. A. and Katarzyński,
                      K. and Katsuragawa, M. and Katz, U. and Kerszberg, D. and
                      Khangulyan, D. and Khélifi, B. and King, J. and Klepser, S.
                      and Klochkov, D. and Kluźniak, W. and Komin, Nu. and
                      Kosack, K. and Krakau, S. and Kraus, M. and Krüger, P. P.
                      and Laffon, H. and Lamanna, G. and Lau, J. and Lefaucheur,
                      J. and Lemière, A. and Lemoine-Goumard, M. and Lenain,
                      J.-P. and Leser, E. and Lohse, T. and Lorentz, M. and Liu,
                      R. and López-Coto, R. and Lypova, I. and Malyshev, D. and
                      Marandon, V. and Marcowith, A. and Mariaud, C. and Marx, R.
                      and Maurin, G. and Maxted, N. and Mayer, M. and Meintjes, P.
                      J. and Meyer, M. and Mitchell, A. M. W. and Moderski, R. and
                      Mohamed, M. and Mohrmann, L. and Morå, K. and Moulin, E.
                      and Murach, T. and Nakashima, S. and de Naurois, M. and
                      Ndiyavala, H. and Niederwanger, F. and Niemiec, J. and
                      Oakes, L. and O’Brien, P. and Odaka, H. and Ohm, S. and
                      Ostrowski, M. and Oya, I. and Padovani, M. and Panter, M.
                      and Parsons, R. D. and Pekeur, N. W. and Pelletier, G. and
                      Perennes, C. and Petrucci, P.-O. and Peyaud, B. and Piel, Q.
                      and Pita, S. and Poireau, V. and Prokhorov, D. A. and
                      Prokoph, H. and Pühlhofer, G. and Punch, M. and
                      Quirrenbach, A. and Raab, S. and Rauth, R. and Reimer, A.
                      and Reimer, O. and Renaud, M. and de los Reyes, R. and
                      Rieger, F. and Rinchiuso, L. and Romoli, C. and Rowell, G.
                      and Rudak, B. and Rulten, C. B. and Sahakian, V. and Saito,
                      S. and Sanchez, D. A. and Santangelo, A. and Sasaki, M. and
                      Schlickeiser, R. and Schüssler, F. and Schulz, A. and
                      Schwanke, U. and Schwemmer, S. and Seglar-Arroyo, M. and
                      Seyffert, A. S. and Shafi, N. and Shilon, I. and
                      Shiningayamwe, K. and Simoni, R. and Sol, H. and Spanier, F.
                      and Spir-Jacob, M. and Stawarz, Ł. and Steenkamp, R. and
                      Stegmann, C. and Steppa, C. and Sushch, I. and Takahashi, T.
                      and Tavernet, J.-P. and Tavernier, T. and Taylor, A. M. and
                      Terrier, R. and Tibaldo, L. and Tiziani, D. and Tluczykont,
                      M. and Trichard, C. and Tsirou, M. and Tsuji, N. and Tuffs,
                      R. and Uchiyama, Y. and van der Walt, D. J. and van Eldik,
                      C. and van Rensburg, C. and van Soelen, B. and Vasileiadis,
                      G. and Veh, J. and Venter, C. and Viana, A. and Vincent, P.
                      and Vink, J. and Voisin, F. and Völk, H. J. and Vuillaume,
                      T. and Wadiasingh, Z. and Wagner, S. J. and Wagner, P. and
                      Wagner, R. M. and White, R. and Wierzcholska, A. and
                      Willmann, P. and Wörnlein, A. and Wouters, D. and Yang, R.
                      and Zaborov, D. and Zacharias, M. and Zanin, R. and
                      Zdziarski, A. A. and Zech, A. and Zefi, F. and Ziegler, A.
                      and Zorn, J. and Żywucka, N. and Magill, J. D. and Buson,
                      S. and Cheung, C. C. and Perkins, J. S. and Tanaka, Y.},
      collaboration = {H. E. S. S.{ Collaboration} and Fermi-{LAT Collaboration}},
      title        = {{T}he $γ$-ray spectrum of the core of {C}entaurus {A} as
                      observed with {H}.{E}.{S}.{S}. and {F}ermi-{LAT}},
      journal      = {Astronomy and astrophysics},
      volume       = {619},
      issn         = {1432-0746},
      address      = {Les Ulis},
      publisher    = {EDP Sciences},
      reportid     = {PUBDB-2018-05468, arXiv:1807.07375},
      pages        = {A71},
      year         = {2018},
      note         = {(c) ESO},
      abstract     = {Centaurus A (Cen A) is the nearest radio galaxy discovered
                      as a very-high-energy (VHE; 100 GeV–100 TeV) γ-ray source
                      by the High Energy Stereoscopic System (H.E.S.S.). It is a
                      faint VHE γ-ray emitter, though its VHE flux exceeds both
                      the extrapolation from early Fermi-LAT observations as well
                      as expectations from a (misaligned) single-zone
                      synchrotron-self Compton (SSC) description. The latter
                      satisfactorily reproduces the emission from Cen A at lower
                      energies up to a few GeV. New observations with H.E.S.S.,
                      comparable in exposure time to those previously reported,
                      were performed and eight years of Fermi-LAT data were
                      accumulated to clarify the spectral characteristics of the
                      γ-ray emission from the core of Cen A. The results allow us
                      for the first time to achieve the goal of constructing a
                      representative, contemporaneous γ-ray core spectrum of Cen
                      A over almost five orders of magnitude in energy. Advanced
                      analysis methods, including the template fitting method,
                      allow detection in the VHE range of the core with a
                      statistical significance of 12σ on the basis of 213 hours
                      of total exposure time. The spectrum in the energy range of
                      250 GeV–6 TeV is compatible with a power-law function with
                      a photon index $Γ = 2.52 ± 0.13_{stat} ± 0.20_{sys.}$ An
                      updated Fermi-LAT analysis provides evidence for spectral
                      hardening by $ΔΓ ≃ 0.4 ± 0.1$ at γ-ray energies above
                      2.8$^{+1.0}$−0.6 GeV at a level of 4.0σ. The fact that
                      the spectrum hardens at GeV energies and extends into the
                      VHE regime disfavour a single-zone SSC interpretation for
                      the overall spectral energy distribution (SED) of the core
                      and is suggestive of a new γ-ray emitting component
                      connecting the high-energy emission above the break energy
                      to the one observed at VHE energies. The absence of
                      significant variability at both GeV and TeV energies does
                      not yet allow disentanglement of the physical nature of this
                      component, though a jet-related origin is possible and a
                      simple two-zone SED model fit is provided to this end.},
      cin          = {ZEU-HESS},
      ddc          = {520},
      cid          = {I:(DE-H253)ZEU-HESS-20140213},
      pnm          = {613 - Matter and Radiation from the Universe (POF3-613)},
      pid          = {G:(DE-HGF)POF3-613},
      experiment   = {EXP:(DE-H253)HESS-20170101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
      eprint       = {1807.07375},
      howpublished = {arXiv:1807.07375},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1807.07375;\%\%$},
      UT           = {WOS:000449725100001},
      doi          = {10.1051/0004-6361/201832640},
      url          = {https://bib-pubdb1.desy.de/record/417235},
}