Light deflection in plasma in the Hartle-Thorne metric and in other axisymmetric spacetimes with a quadrupole moment

Article

Light deflection in plasma in the Hartle-Thorne metric and in other axisymmetric spacetimes with a quadrupole moment

Bičák J.; Bezděková B.

Phys. Rev. D 108(8), 21 (2023)

Abstract

The light propagation in plasma medium around stationary gravitating objects is studied in the geometrical optics limit. Static metrics with quadrupole moments are considered; however, most of our attention is on the stationary Hartle-Thorne metric and Kerr metric. Their different effects on the light deflection are compared. The deflection angle is given in a general analytic form, and the detailed calculations are performed in the weak-field limits and illustrated graphically. The trajectories of the light rays are constructed and compared, emphasizing the role of the quadrupole moment.

Institute authors

Bičák, Jiří

Supported by

GACR 21-11268S — Mass and charge currents in general relativity and astrophysics

BibTeX

@article{UTF895,
  author        = {Bičák J. and Bezděková B.},
  title         = {{Light deflection in plasma in the Hartle-Thorne metric and in other axisymmetric spacetimes with a quadrupole moment}},
  journal       = {Phys. Rev. D},
  volume        = {108},
  number        = {8},
  pages         = {21},
  year          = {2023},
  month         = {10},
  doi           = {10.1103/PhysRevD.108.084043},
}