Polarized Images of Synchrotron Radiations in Curved Spacetime

Abstract

In this work, we derive two formulas encoding the polarization direction and luminosity of synchrotron radiations from the moving electrons in curved spacetime under the geometric optics approximation. As an application, we further study the polarized images of synchrotron radiations from electron sources in Schwarzschild black hole spacetime with a vertical and uniform magnetic field. In particular, by focusing on the circular orbits of electrons on the equatorial plane, we show the polarized images of the synchrotron radiations from these orbits for different observational angles and discuss the variations of the polarization directions concerning the angles.

arXiv comment25 pages, 6 figures, accepted in EPJC

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Cited by in corpus (5)

• Circular orbits and polarized images of charged particles orbiting Kerr black hole with a weak magnetic field
• How different are shadows of compact objects with and without horizons?
• How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models
• Probing Observable Features of Lorentz violation in Low-Energy Hořava Gravity with Accretion Disk Images of Black Hole
• Can synchrotron radiation reveal the presence of {\it dark sector} around black hole?