Quasinormal Modes of Black Holes with Non-Linear-Electrodynamic sources in Rastall Gravity

Understand

One of the notable modifications of General Relativity (GR) is the Rastall gravity.

• We have studied the polarization modes of Gravitational Waves (GWs) in this gravity.
• It is found that at a very far distance away from the source of GWs, Rastall gravity behaves identically to GR.
• That is, we get only two massless tensor polarization modes of GWs in the theory.