On the circular polarisation of light from axion-photon mixing
arXiv:0911.3145 · doi:10.1063/1.3462669
Abstract
From the analysis of measurements of the linear polarisation of visible light coming from quasars, the existence of large-scale coherent orientations of quasar polarisation vectors in some regions of the sky has been reported. Here, we show that this can be explained by the mixing of the incoming photons with nearly massless pseudoscalar (axion-like) particles in extragalactic magnetic fields. We present a new treatment in terms of wave packets and discuss its implications for the circular polarisation.
arXiv commentContributed to "Invisible Universe International Conference", Paris, June 29 - July 3 2009. To be published in AIP proceedings
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- Cornering the axion-like particle explanation of quasar polarisations
- Upper limit on the axion-photon coupling from magnetic white dwarf polarization