Source-linked AI summary
Vortex Effects in Merging Black Holes and Saturons
Gia Dvali, Oleg Kaikov, Florian Kuhnel, Juan Sebastián Valbuena-Bermúdez, Michael Zantedeschi
TL;DR
The paper studies whether vortex formation changes saturon merger dynamics and emitted radiation. It finds that vortex formation strongly affects energy emission and proposes that black-hole mergers may show delayed or suppressed gravitational radiation, with the correspondence strongest for maximal-entropy black holes.
Problem
How vortex formation affects saturon collisions and the radiation emitted in black-hole mergers remains an open question the paper investigates.
Source: p. 2Method
The authors use saturons as a laboratory, studying collisions and how the formation of internal vorticity affects their dynamics.
Source: pp. 1–2Results
Vortex formation suppresses energy emission by several hundred percent compared with the non-vortex case.
Source: p. 5Takeaways & Limitations
The authors expect vortex formation in certain black-hole mergers to delay or suppress gravitational radiation.
Source: p. 2The spin-vorticity correspondence is strongest at maximal entropy and need not hold for low-spin black holes.
Source: p. 6
Abstract
from arXiv · showhide
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. This could leave unique signatures detectable with upcoming gravitational-wave searches, which can thereby serve as a portal to macroscopic quantum effects in black holes.