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000297020 0247_ $$2datacite_doi$$a10.3204/DESY-PROC-2008-02/sakharov_alexander
000297020 0247_ $$2arXiv$$aarXiv:0809.0612
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000297020 0881_ $$aarXiv:0809.0612; CERN-PH-TH-2008-187
000297020 088__ $$2arXiv$$aarXiv:0809.0612
000297020 088__ $$2CERN$$aCERN-PH-TH-2008-187
000297020 1001_ $$0P:(DE-HGF)0$$aRubbia, Andre$$b0
000297020 1112_ $$a4th Patras Workshop on Axions, WIMPs and WISPs$$cHamburg$$d2008-06-18 - 2008-06-21$$gAXION-WIMP 2008$$wGermany
000297020 245__ $$aPolarization mesurements of gamma ray bursts and axion like particles
000297020 260__ $$aHamburg$$bDeutsches Elektronen-Synchrotron, DESY$$c2009
000297020 300__ $$a65-68
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000297020 520__ $$aA polarized gamma ray emission spread over a sufficiently wide energy band from a strongly magnetized astrophysical object like gamma ray bursts (GRBs) offers an opportunity to test the hypothesis of axion like particles (ALPs). Based on evidences of polarized gamma ray emission detected in several gamma ray bursts we estimated the level of ALPs induced dichroism, which could take place in the magnetized fireball environment of a GRB. This allows to estimate the sensitivity of polarization measurements of GRBs to the ALP-photon coupling. This sensitivity $\gag\le 2.2\cdot 10^{-11} {\rm GeV^{-1}}$ calculated for the ALP mass $m_a=10^{-3}~{\rm eV}$ and MeV energy spread of gamma ray emission is competitive with the sensitivity of CAST and becomes even stronger for lower ALPs masses.
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000297020 7001_ $$0P:(DE-HGF)0$$aSakharov, Alexander$$b1
000297020 773__ $$a10.3204/DESY-PROC-2008-02/sakharov_alexander
000297020 7870_ $$0PUBDB-2016-01759$$aLindner, Axel et.al.$$dVerlag Deutsches Elektronen-Synchrotron, 2008$$iIsPartOf$$rDESY-PROC-2008-02$$tProceedings, 4th Patras Workshop on Axions, WIMPs and WISPs (AXION-WIMP 2008)
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