%0 Journal Article
%A Burrage, Clare
%A DESY
%T Searching for axion-like-particles in the sky.
%J Nuclear physics  / B / Proceedings supplements
%V 194
%N DESY-09-080
%@ 0920-5632
%C Amsterdam
%I Elsevier
%M PHPPUBDB-11756
%M DESY-09-080
%P 190-195
%D 2009
%Z © Published by Elsevier B.V.
%X If dark energy couples to the fields of the standard model we can hope to detect or constrain it through non-gravitational effects. If the dark energy field couples to photons it behaves as an Axion-Like-Particle (ALP). ALPs mix with photons in the presence of magnetic fields and hence affect astronomical observations. We show that empirically established luminosity relations can be used as a new test for ALPs and that when applied to observations of active galactic nuclei this is highly suggestive of the existence of a very light ALP.
%B GGI Workshop: New Horizons for Modern Cosmology
%C 19 Jan 2009 - 13 Mar 2009, Florence (Italy)
Y2 19 Jan 2009 - 13 Mar 2009
M2 Florence, Italy
%F PUB:(DE-HGF)29 ; PUB:(DE-HGF)16
%9 ReportJournal Article
%U <Go to ISI:>//WOS:000272247800034
%R 10.1016/j.nuclphysbps.2009.07.022
%U https://bib-pubdb1.desy.de/record/90168