Nonlinear electrodynamic effect of light bending by charged astronomical objects

Kim, J. Y. and Lee, T. (2013) Nonlinear electrodynamic effect of light bending by charged astronomical objects. Il nuovo cimento C, 36 (Sup. 1). pp. 69-77. ISSN 1826-9885

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Abstract

A nonuniform electric or magnetic field can induce a continually varying index of refraction. A strong electromagnetic field can change the vacuum index of refraction by the nonlinear electrodynamic effect. We calculate the bending angle of a light ray under strong electric and magnetic field of charged black hole and neutron star according to the nonlinear electrodynamics of the Euler-Heisenberg interaction. We estimate that the electrical bending angle is negligibly small compared with the gravitational bending. The bending of light by the magnetic field of a neutron star is also significantly smaller than the bending angle by gravitation.

Item Type: Article
Uncontrolled Keywords: Quantum electrodynamics ; Fundamental aspects of astrophysics
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 07 May 2020 16:54
Last Modified: 07 May 2020 16:54
URI: http://eprints.bice.rm.cnr.it/id/eprint/18434

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