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| Home > Private Collections > >DESY > >FH > L > Modelling $\gamma$-ray-axion-like particle oscillations in turbulent magnetic fields: relevance for observations with Cherenkov telescopes |
| Home > Private Collections > >DESY > >FH > L > Modelling $\gamma$-ray-axion-like particle oscillations in turbulent magnetic fields: relevance for observations with Cherenkov telescopes |
| Contribution to a conference proceedings/Contribution to a book | PUBDB-2016-05921 |
2014
Verlag Deutsches Elektronen-Synchrotron
Hamburg
ISBN: 978-3-935702-59-1
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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-03/meyer_manuel
Abstract: Axion-like particles (ALPs) are a common prediction of certain theories beyond the Standard Model and couple to photons in the presence of external magnetic fields. As a consequence, photon-ALP conversion could lead to an enhancement of the flux of extragalactic $\gamma$-ray sources that is otherwise attenuated due to the interactions with background radiation fields. The magnetic fields traversed by the $\gamma$ rays are often turbulent and frequently modelled with a simple domain-like structure. Given a maximum mixing between photons and ALPs, we show that in such models realisations of the fields exist for which the photon-ALP oscillation probability vanishes. This behaviour does not occur in more sophisticated magnetic-field models.
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Book/Proceedings/Report
Axions, WIMPs and WISPs: Proceedings, 10th Patras workshop, PATRAS 2014, AXION-WIMP 2014, Geneva, Switzerland, June 29-July 4, 2014
10th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2014, GenevaGeneva, Switzerland, 29 Jun 2014 - 4 Jul 2014
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-PROC 207 p (2014) [10.3204/DESY-PROC-2014-03]
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