%0 Conference Paper
%A Payez, A.
%A Cudell, J. R.
%A Hutsemekers, D.
%T New constraints on very light pseudoscalars
%N arXiv:1204.6614
%C Hamburg
%I Deutsches Elektronen-Synchrotron, DESY
%M PUBDB-2016-01116
%M arXiv:1204.6614
%P 147-150
%D 2011
%X Nearly massless axion-like particles are of interest for astrophysical observations, and some constraints on their parameter space do exist in the literature. Here, we propose to put new constraints on these particles using polarisation and, in particular, the polarisation differences observed between different quasar classes.
%B 7th Patras Workshop on Axions, WIMPs and WISPs
%C 27 Jun 2011 - 1 Jul 2011, Mykonos (Greece)
Y2 27 Jun 2011 - 1 Jul 2011
M2 Mykonos, Greece
%K talk (INSPIRE)
%K polarization (INSPIRE)
%K quasar (INSPIRE)
%K axion (INSPIRE)
%K WIMP (INSPIRE)
%K WISP (INSPIRE)
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)15
%9 Contribution to a conference proceedingsInternal Report
%R 10.3204/DESY-PROC-2011-04/payez_alexandre
%U https://bib-pubdb1.desy.de/record/295200