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@INPROCEEDINGS{Rubbia:297020,
      author       = {Rubbia, Andre and Sakharov, Alexander},
      title        = {{P}olarization mesurements of gamma ray bursts and axion
                      like particles},
      address      = {Hamburg},
      publisher    = {Deutsches Elektronen-Synchrotron, DESY},
      reportid     = {PUBDB-2016-01773, arXiv:0809.0612. CERN-PH-TH-2008-187},
      pages        = {65-68},
      year         = {2009},
      abstract     = {A polarized gamma ray emission spread over a sufficiently
                      wide energy band from a strongly magnetized astrophysical
                      object like gamma ray bursts (GRBs) offers an opportunity to
                      test the hypothesis of axion like particles (ALPs). Based on
                      evidences of polarized gamma ray emission detected in
                      several gamma ray bursts we estimated the level of ALPs
                      induced dichroism, which could take place in the magnetized
                      fireball environment of a GRB. This allows to estimate the
                      sensitivity of polarization measurements of GRBs to the
                      ALP-photon coupling. This sensitivity $\gag\le 2.2\cdot
                      10^{-11} {\rm GeV^{-1}}$ calculated for the ALP mass
                      $m_a=10^{-3}~{\rm eV}$ and MeV energy spread of gamma ray
                      emission is competitive with the sensitivity of CAST and
                      becomes even stronger for lower ALPs masses.},
      month         = {Jun},
      date          = {2008-06-18},
      organization  = {4th Patras Workshop on Axions, WIMPs
                       and WISPs, Hamburg (Germany), 18 Jun
                       2008 - 21 Jun 2008},
      cin          = {L},
      cid          = {I:(DE-H253)L-20120731},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      experiment   = {EXP:(DE-H253)HERA(machine)-20150101},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)15},
      eprint       = {0809.0612},
      howpublished = {arXiv:0809.0612},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:0809.0612;\%\%$},
      UT           = {WOS:00},
      doi          = {10.3204/DESY-PROC-2008-02/sakharov_alexander},
      url          = {https://bib-pubdb1.desy.de/record/297020},
}