A note on polarized light from Magnetars
arXiv:1705.01540 · doi:10.1140/epjc/s10052-017-5342-3
Abstract
In a recent paper it is claimed that vacuum birefringence has been experimentally observed for the first time by measuring the degree of polarization of visible light from a Magnetar candidate, a neutron star with a magnetic field presumably as large as ~G. The role of such a strong magnetic field is twofold. First, the surface of the star emits, at each point, polarized light with linear polarization correlated with the orientation of the magnetic field. Depending on the relative orientation of the magnetic axis of the star with the direction to the distant observer, a certain degree of polarization should be visible. Second, the strong magnetic field in the vacuum surrounding the star could enhance the effective degree of polarization observed: vacuum birefringence. We compare experimental data and theoretical expectations concluding that the conditions to support a claim of strong evidence of vacuum birefringence effects are not met.
arXiv comment10 pages, 3 figures, shorter version published in EPJC. Conclusion unchanged
References in corpus (19)
- The PVLAS experiment: measuring vacuum magnetic birefringence and dichroism with a birefringent Fabry-Perot cavity
- Evidence for vacuum birefringence from the first optical polarimetry measurement of the isolated neutron star RX\, J1856.53754
- Atmosphere Models of Magnetized Neutron Stars: QED Effects, Radiation Spectra, and Polarization Signals
- An Addendum to the Heisenberg-Euler effective action beyond one loop
- QED and the High Polarization of the Thermal Radiation from Neutron Stars
- Polarized X-Ray Emission from Magnetized Neutron Stars: Signature of Strong-Field Vacuum Polarization
- Polarization Evolution in Strong Magnetic Fields
- Timing the Nearby Isolated Neutron Star RX J1856.5-3754
- Limits on Low Energy Photon-Photon Scattering from an Experiment on Magnetic Vacuum Birefringence
- Polarization of Thermal X-rays from Isolated Neutron Stars
- The High-Energy Polarization-Limiting Radius of Neutron Star Magnetospheres I -- Slowly Rotating Neutron Stars
- The X-Ray Polarization Signature of Quiescent Magnetars: Effect of Magnetospheric Scattering and Vacuum Polarization
- Constraining the Geometry of the Neutron Star RX J1856.5-3754
- Polarized thermal emission from X-ray Dim Isolated Neutron Stars: the case of RX J1856.5-3754
- The optical/UV excess of X-ray dim isolated neutron star: I. bremsstrahlung emission from a strangeon star plasma atmosphere
- Polarization effects in light-by-light scattering: Euler-Heisenberg versus Born-Infeld
- Nonlinear QED effects in X-ray emission of pulsars
- Vacuum non-linear electrodynamic polarization effects in hard emission of pulsars and magnetars
- A Comment on "A note on polarized light from Magnetars: QED effects and axion-like particles" by L.M. Capparelli, L. Maiani and A.D. Polosa
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- All-optical signatures of quantum vacuum nonlinearities in generic laser fields
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- Probing Physics in Vacuum Using an X-ray Free-Electron Laser, a High-Power Laser, and a High-Field Magnet
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- Report on Progress in Physics: Observation of the Breit-Wheeler Process and Vacuum Birefringence in Heavy-Ion Collisions
- Letter of Intent: Towards a Vacuum Birefringence Experiment at the Helmholtz International Beamline for Extreme Fields
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- Using nonlinear Breit-Wheeler to test nonlinear vacuum birefringence
- On the observability of field-assisted birefringent Delbrück scattering
- Monte Carlo study of the BMV vacuum linear magnetic birefringence experiment
- On Measuring Stimulated Photon-photon Scattering using Multiple Ultraintense Lasers
- Optical Signatures of Einstein-Euler-Heisenberg AdS/dS Black Holes in the light of Event Horizon Telescope
- A Comment on "A note on polarized light from Magnetars: QED effects and axion-like particles" by L.M. Capparelli, L. Maiani and A.D. Polosa
- Radiation from polarized vacuum in a laser-particle collision
- Effects of control fields on the pair creation and the vacuum information transmission
- Characterization of the Vacuum Birefringence Polarimeter at BMV: Dynamical Cavity Mirror Birefringence
- X-ray vacuum diffraction at finite spatio-temporal offset
- Two shadows of a single black hole: Vacuum birefringence phenomena within Einstein-nonlinear-electrodynamics