Master Equation and Quasinormal Modes for Even Parity Perturbation.
where [H.sub.0] (r), [H.sub.1] (r), [H.sub.2] (r), K(r) are unknown functions for the even parity perturbation.
Here we study the QNMs for even parity perturbation in asymptotically flat, dS, and AdS spacetimes.
In the derivation of the master equation for even parity, we made use of the method proposed in .
For even parity, the shape of the effective potential in the vicinity of the event horizon is very different from that for odd parity.
Caption: FIGURE 10: (a) The effective potential of even parity perturbation in asymptotically flat spacetime.
Caption: FIGURE 11: (a) The effective potential of even parity perturbation in dS spacetime.