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@INPROCEEDINGS{Marsh:408352,
      author       = {Marsh, M. C. D.},
      title        = {{H}ints of a {C}osmic {A}xion {B}ackground},
      address      = {Hamburg},
      publisher    = {Verlag Deutsches Elektronen-Synchrotron},
      reportid     = {PUBDB-2018-02805, DESY-PROC-2013-04},
      isbn         = {978-3-935702-83-6},
      series       = {DESY-PROC},
      pages        = {159-163},
      year         = {2013},
      comment      = {Marsh, M.C.D. "Hints of a Cosmic Axion Background" 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     = {Marsh, M.C.D. "Hints of a Cosmic Axion
                       Background" 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     = {In models of particle physics and cosmology arising from
                      compactifications of string theory , the reheating of the
                      standard model after inflation generically proceeds through
                      the decay of heavy moduli. Non-vanishing branching ratios
                      for moduli decay into axions generate axionic dark radiation
                      which linger in the present universe as a homogeneous and
                      isotropic background of relativistic axions, hence called
                      the Cosmic Axion Background (CAB). Axion-photon conversion
                      in magnetic fields may render the CAB visible, and we show
                      that the soft X-ray excess observed in galaxy clusters may
                      provide hints for the existence of a CAB.},
      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/marsh_david},
      url          = {https://bib-pubdb1.desy.de/record/408352},
}