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@INPROCEEDINGS{Roncadelli:408339,
      author       = {Roncadelli, M. and Galanti, G. and Tavecchio, F. and
                      Bonnoli, G.},
      title        = {{V}ery-high-energy quasars hint at {ALP}s},
      address      = {Hamburg},
      publisher    = {Verlag Deutsches Elektronen-Synchrotron},
      reportid     = {PUBDB-2018-02792, DESY-PROC-2013-04},
      isbn         = {978-3-935702-83-6},
      series       = {DESY-PROC},
      pages        = {89-92},
      year         = {2013},
      comment      = {Roncadelli, M. "Very-high-energy quasars hint at ALPs" in
                      Proceedings, 9th Patras Workshop on Axions, WIMPs and WISPs
                      (AXION-WIMP 2013) / Oberlack, Uwe, Sissol, Pierre (eds.),
                      2013 ; AXION-WIMP 2013 : 9th Patras Workshop on Axions,
                      WIMPs and WISPs , 2013-06-23 - 2013-06-28, Mainz},
      booktitle     = {Roncadelli, M. "Very-high-energy
                       quasars hint at ALPs" in Proceedings,
                       9th Patras Workshop on Axions, WIMPs
                       and WISPs (AXION-WIMP 2013) / Oberlack,
                       Uwe, Sissol, Pierre (eds.), 2013 ;
                       AXION-WIMP 2013 : 9th Patras Workshop
                       on Axions, WIMPs and WISPs , 2013-06-23
                       - 2013-06-28, Mainz},
      abstract     = {One of the mysteries of very-high-energy (VHE) astrophysics
                      is the observatio of flat spectrum radio quasars (FSRQs)
                      above about 30 GeV, because at those energies their broad
                      line region should prevent photons produced by the central
                      engine to escape. Although a few astrophysical explanations
                      have been put forward, they are totally ad hoc. We show that
                      a natural explanation emerges within the conventional models
                      of FSRQs provided that photon-ALP oscillations take place
                      inside the source for the model parameters within an allowed
                      range.},
      month         = {Jun},
      date          = {2013-06-24},
      organization  = {9th Patras Workshop on Axions, WIMPs
                       and WISPs, Mainz (Germany), 24 Jun 2013
                       - 28 Jun 2013},
      keywords     = {Hypothetisches Teilchen (gnd)},
      cin          = {L},
      cid          = {I:(DE-H253)L-20120731},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.3204/DESY-PROC-2013-04/roncadelli_marco},
      url          = {https://bib-pubdb1.desy.de/record/408339},
}