New total transmission modes of the Kerr geometry with Schwarzschild limit frequencies at complex infinity

Understand

In addition to the well-known quasinormal modes, the gravitational modes of the Kerr geometry also include sets of total-transmission modes.

• Each mode can be considered as an element of a sequence of modes parameterized by the angular momentum of the black hole.
• One family of gravitational total-transmission modes of Kerr have been known for some time.
• Modes in this family connect to a Schwarzschild limit where the mode frequency is finite and purely imaginary.