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PUBDB-2018-02805

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hints of a Cosmic Axion Background

Marsh, M. C. D. (Corresponding author)

2013
Verlag Deutsches Elektronen-Synchrotron Hamburg
ISBN: 978-3-935702-83-6

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2013-04/marsh_david

Report No.: DESY-PROC-2013-04

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.

Keyword(s): Hypothetisches Teilchen

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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. No specific instrument

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Report Oberlack, U. (Editor) ; Sissol, P. (Editor)
Axions WIMPs and WISPs: Proceedings, 9th Patras workshop, PATRAS 2013, Mainz, Germany, June 23-28, 2013
20139th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2013, MainzMainz, Germany, 24 Jun 2013 - 28 Jun 20132013-06-242013-06-28 Hamburg : DESY 292 p (2013) [10.3204/DESY-PROC-2013-04]2013     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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