Rotating black holes are the most powerful phenomenon in the known universe. Their powerful gravity radically alters the ...

Conversely, material moving away from the observer appears dimmer. Ergosphere (for rotating black holes):In rotating (Kerr) black holes, there is an additional region called the ergosphere.

The Kerr index change slows down the probe light ... For probe light slower than the pulse, the front end creates a black-hole horizon, from which nothing can escape. The resulting spectra matched ...