Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2012-03-09
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
v2: one typo corrected. Added a few comments, matches published version
Scientific paper
10.1103/PhysRevD.85.085021
The mixing of photons with axion-like particles (ALPs) in the large-scale magnetic field $B$ changes the polarization angle of a linearly polarized photon beam from active galactic nuclei in radio galaxies as it propagates over cosmological distances. Using available ultraviolet polarization data concerning these sources we derive a new bound on the product of the photon-ALP coupling $g_{a\gamma}$ times $B$. We find $g_{a\gamma} B \lesssim 10^{-11}$ GeV$^{-1}$ nG for ultralight ALPs with $m_a \lesssim 10^{-15}$ eV. We compare our new bound with the ones present in the literature and we comment about possible improvements with observations of more sources.
Horns Dieter
Maccione Luca
Mirizzi Alessandro
Roncadelli Marco
No associations
LandOfFree
Probing axion-like particles with the ultraviolet photon polarization from active galactic nuclei in radio galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Probing axion-like particles with the ultraviolet photon polarization from active galactic nuclei in radio galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing axion-like particles with the ultraviolet photon polarization from active galactic nuclei in radio galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-487981