Contribution to a conference proceedings/Internal Report

PUBDB-2016-01773

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Polarization mesurements of gamma ray bursts and axion like particles

Rubbia, A. ; Sakharov, A.

2009
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2008-02/sakharov_alexander

Report No.: CERN-PH-TH-2008-187; arXiv:0809.0612

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.

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Contributing Institute(s):

1. Bibliothek und Dokumentation (L)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. Facility (machine) HERA

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Proceedings/Internal Report Lindner, A. (Editor)DESY* ; Redondo, J. (Editor)DESY* ; Ringwald, A. (Editor)DESY*
Proceedings, 4th Patras Workshop on Axions, WIMPs and WISPs (AXION-WIMP 2008)
20084th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2008, HamburgHamburg, Germany, 18 Jun 2008 - 21 Jun 20082008-06-182008-06-21 Verlag Deutsches Elektronen-Synchrotron (2008)2008     Files BibTeX | EndNote: XML, Text | RIS

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