Magnetospheric Birefringence Induces Unique Polarization Signatures in Neutron-Star Spectra

Details Magnetospheric Birefringence Induces Unique Polarization Signatures in Neutron-Star Spectra Magnetospheric Birefringence Induces Unique Polarization Signatures in Neutron-Star Spectra

2004-10-22

arxiv.org/abs/astro-ph/0410548v2

Mon.Not.Roy.Astron.Soc.368:1377-1380,2006

Astronomy and Astrophysics

Astrophysics

4 pages, 5 figures, changes to reflect accepted version

Scientific paper

10.1111/j.1365-2966.2006.10208.x

We study the propagation of polarization light through the magnetosphere of neutron stars. At intermediate frequencies (the optical through the infrared), both the birefringence induced by the plasma and by quantumelectrodynamics influence the observation polarization of radiation from the surface of the neutron star. Because these two processes compete in this regime, we find that polarization observations can constrain the properties of the neutron-star magnetosphere, specifically the total charge density. We calculate both the phase-resolved and the phase-averaged polarization signatures induced by magnetospheric birefringence.

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