Vortex Effects in Merging Black Holes and Saturons

Understand

Vorticity has recently been suggested to be a property of highly-spinning black holes.

• The connection between vorticity and limiting spin represents a universal feature shared by objects of maximal microstate entropy, so-called saturons.
• Using $Q$-ball-like saturons as a laboratory for black holes, we study the collision of two such objects and find that vorticity can have a large impact on the emitted radiation as well as on the charge and angular momentum of the final configuration.
• As black holes belong to the class of saturons, we expect that the formation of vortices can cause similar effects in black hole mergers, leading to macroscopic deviations in gravitational radiation.