New polarimetric constraints on axion-like particles

被引:27
|
作者
Payez, A. [1 ]
Cudell, J. R. [1 ]
Hutsemekers, D. [1 ]
机构
[1] U Liege, AGO Dept, Liege, Belgium
关键词
axions; active galactic nuclei; superclusters; extragalactic magnetic fields; OPTICAL CIRCULAR-POLARIZATION; BROAD ABSORPTION-LINE; SCALE COHERENT ORIENTATIONS; QUASI-STELLAR OBJECTS; LOCAL SUPERCLUSTER; MAGNETIC-FIELDS; RADIO; PHOTON; CONVERSION; VECTORS;
D O I
10.1088/1475-7516/2012/07/041
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We show that the parameter space of axion-like particles can be severely constrained using high-precision measurements of quasar polarisations. Robust limits are derived from the measured bounds on optical circular polarisation and from the distribution of linear polarisations of quasars. As an outlook, this technique can be improved by the observation of objects located behind clusters of galaxies, using upcoming space-borne X-ray polarimeters.
引用
收藏
页数:16
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