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@ARTICLE{Aleksi:207224,
      author       = {Aleksić, J. and Antonelli, L. A. and Antoranz, P. and
                      Babic, A. and Barres de Almeida, U. and Barrio, J. A. and
                      Becerra González, J. and Bednarek, W. and Berger, K. and
                      Bernardini, E. and Biland, A. and Blanch, O. and Bock, R. K.
                      and Boller, A. and Bonnefoy, S. and Bonnoli, G. and Borla
                      Tridon, D. and Borracci, F. and Bretz, T. and Carmona, E.
                      and Carosi, A. and Carreto Fidalgo, D. and Colin, P. and
                      Colombo, E. and Contreras, J. L. and Cortina, J. and Cossio,
                      L. and Covino, S. and Da Vela, P. and Dazzi, F. and De
                      Angelis, A. and De Caneva, G. and Delgado Mendez, C. and De
                      Lotto, B. and Doert, M. and Domínguez, A. and Dominis
                      Prester, D. and Dorner, D. and Doro, M. and Eisenacher, D.
                      and Elsaesser, D. and Farina, E. and Ferenc, D. and Fonseca,
                      M. V. and Font, L. and Fruck, C. and García López, R. J.
                      and Garczarczyk, M. and Garrido Terrats, D. and Gaug, M. and
                      Giavitto, G. and Godinović, N. and González Muñoz, A. and
                      Gozzini, S. R. and Hadamek, A. and Hadasch, D. and Häfner,
                      D. and Herrero, A. and Hose, J. and Hrupec, D. and Idec, W.
                      and Kadenius, V. and Knoetig, M. L. and Krähenbühl, T. and
                      Krause, J. and Kushida, J. and La Barbera, A. and Lelas, D.
                      and Lewandowska, N. and Lindfors, E. and Lombardi, S. and
                      López-Coto, R. and López, M. and López-Oramas, A. and
                      Lorenz, E. and Lozano, I. and Makariev, M. and Mallot, K.
                      and Maneva, G. and Mankuzhiyil, N. and Mannheim, K. and
                      Maraschi, L. and Marcote, B. and Mariotti, M. and Martínez,
                      M. and Masbou, J. and Mazin, D. and Meucci, M. and Miranda,
                      J. M. and Mirzoyan, R. and Moldón, J. and Moralejo, A. and
                      Munar-Adrover, P. and Nakajima, D. and Niedzwiecki, A. and
                      Nilsson, K. and Nowak, N. and Orito, R. and Overkemping, A.
                      and Paiano, S. and Palatiello, M. and Paneque, D. and
                      Paoletti, R. and Paredes, J. M. and Partini, S. and Persic,
                      M. and Prada, F. and Prada Moroni, P. G. and Prandini, E.
                      and Preziuso, S. and Puljak, I. and Reichardt, I. and
                      Reinthal, R. and Rhode, W. and Ribó, M. and Rico, J. and
                      Rügamer, S. and Saggion, A. and Saito, K. and Saito, T. Y.
                      and Salvati, M. and Satalecka, K. and Scalzotto, V. and
                      Scapin, V. and Schultz, C. and Schweizer, T. and Shore, S.
                      N. and Sillanpää, A. and Sitarek, J. and Snidaric, I. and
                      Sobczynska, D. and Spanier, F. and Spiro, S. and Stamatescu,
                      V. and Stamerra, A. and Steinke, B. and Storz, J. and Sun,
                      S. and Surić, T. and Takalo, L. and Takami, H. and
                      Tavecchio, F. and Temnikov, P. and Terzić, T. and Tescaro,
                      D. and Teshima, M. and Thaele, J. and Tibolla, O. and
                      Torres, D. F. and Toyama, T. and Treves, A. and Uellenbeck,
                      M. and Vogler, P. and Wagner, R. M. and Weitzel, Q. and
                      Zandanel, F. and Zanin, R. and Dauser, T. and Fortin, P. and
                      Kadler, M. and Krauß, F. and Wilbert, S. and Wilms, J.},
      collaboration = {{MAGIC Collaboration}},
      title        = {{R}apid and {M}ultiband {V}ariability of the {T}e{V}
                      {B}right {A}ctive {N}ucleus of the {G}alaxy {IC} 310},
      journal      = {Astronomy and astrophysics},
      volume       = {563},
      issn         = {1432-0746},
      address      = {Les Ulis},
      publisher    = {EDP Sciences},
      reportid     = {PUBDB-2015-01207, arXiv:1305.5147},
      pages        = {A91},
      year         = {2014},
      note         = {OA},
      abstract     = {Context. The radio galaxy IC 310 has recently been
                      identified as a γ-ray emitter based on observations at GeV
                      energies with Fermi-LAT and at very high energies (VHE, E >
                      100 GeV) with the MAGIC telescopes. Originally classified
                      as a head-tail radio galaxy, the nature of this object is
                      subject of controversy since its nucleus shows blazar-like
                      behavior.Aims. To understand the nature of IC 310 and the
                      origin of the VHE emission, we studied the spectral and flux
                      variability of IC 310 from the X-ray band to the VHE
                      γ-ray regime.Methods. The light curve of IC 310 above
                      300 GeV has been measured with the MAGIC telescopes from
                      2009 October to 2010 February. Contemporaneous Fermi-LAT
                      data (2008−2011) in the 10−500 GeV energy range were
                      also analyzed. In the X-ray regime, archival observations
                      from 2003 to 2007 with XMM-Newton, Chandra, and Swift-XRT in
                      the 0.5−10 keV band were studied.Results. The VHE light
                      curve reveals several high-amplitude and short-duration
                      flares. Day-to-day flux variability is clearly present
                      $(>5\sigma)$. The photon index between 120 GeV and 8 TeV
                      remains at the value Γ $\thicksim$ 2.0 during both low and
                      high flux states. The VHE spectral shape does not show
                      significant variability, whereas the flux at 1 TeV changes
                      by a factor of $\thicksim$ 7. Fermi-LAT detected only eight
                      $\gamma-ray$ events in the energy range 10 GeV–500 GeV
                      in three years of observation. The measured photon index of
                      Γ = 1.3 $\pm$ 0.5 in the Fermi-LAT range is very hard. The
                      X-ray measurements show strong variability in both flux and
                      photon index. The latter varied from 1.76 $\pm$ 0.07 to 2.55
                      $\pm$ 0.07. Conclusions. The rapid variability measured in
                      γ-rays and X-rays confirms the blazar-like behavior of
                      IC 310. The multi-TeV γ-ray emission seems to originate
                      from scales of less than 80 Schwarzschild radii (for a black
                      hole mass of 2 × 10$^{8}$ $M_{\odot}$) within the compact
                      core of its FR I radio jet with orientation angle
                      10°−38°. The spectral energy distribution resembles that
                      of an extreme blazar, albeit the luminosity is more than two
                      orders of magnitude lower.},
      cin          = {ZEU-EXP/AT},
      ddc          = {520},
      cid          = {$I:(DE-H253)ZEU-EXP_AT-20120731$},
      pnm          = {523 - High-energy gamma ray astronomy (POF2-523)},
      pid          = {G:(DE-HGF)POF2-523},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000333798000091},
      eprint       = {1305.5147},
      howpublished = {arXiv:1305.5147},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1305.5147;\%\%$},
      doi          = {10.1051/0004-6361/201321938},
      url          = {https://bib-pubdb1.desy.de/record/207224},
}