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Gravitational Refraction of Compact Objects with Quadrupoles
Автор(ы)
Дата публикации
28 февраля 2023 г.
Тип
journal article
Издатель
Multidisciplinary Digital Publishing Institute
Журнал
Том
15
Выпуск
3
Первая страница
614
Последняя страница
614
ISSN
2073-8994
Аннотация
We use the material medium approach to derive the refractive index that can be associated with the gravitational field of a compact object with a quadrupole moment. We consider both a static deformation and a stationary rotation of the gravitational source as the source of the quadrupole. We show that up to the first order in the quadrupole, the refractive indices of both configurations are equivalent such that from the point of view of refraction, a mimicking effect can occur. This also holds at the level of the deflection angle. We argue that it is possible to use the refractive indices and the parameters of the trajectories of light rays that propagate in a gravitational field to determine the physical parameters of the source.
Области науки (FoS)