Contribution to a conference proceedings/Internal Report

PUBDB-2016-01117

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Indications for a suppression of pair production at very high energies

Meyer, M.>Extern* ; Horns, D.>Extern*

2011
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2011-04/meyer_manuel

Report No.: DESY-PROC-2011-04

Abstract: The transparency of the universe for very high energy (VHE) photons is limited due to pair-production with low energy photons of the extra galactic background light (EBL) in the ultra-violet to infrared wavelength band. Here, we use 58 energy spectra from VHE emitting active galactic nuclei (AGN) from redshift 0.004 to 0.536 to search for signatures of deviations from the minimum expected opacity. A statistical study of the individual measurements reveals indications for an overcorrection of AGN spectra with current EBL models. Axion like particles are discussed as a possible explanation of the result.

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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 Schumann, M. (Editor) ; Zioutas, K. (Editor)
Proceedings, 7th Patras Workshop on Axions, WIMPs and WISPs
20117th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2011, MykonosMykonos, Greece , 27 Jun 2011 - 1 Jul 20112011-06-272011-07-01     Files BibTeX | EndNote: XML, Text | RIS

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