Vortices in Black Holes

Abstract

We argue that black holes admit vortex structure. This is based both on a graviton-condensate description of a black hole as well as on a correspondence between black holes and generic objects with maximal entropy compatible with unitarity, so-called saturons. We show that due to vorticity, a $Q$-ball-type saturon of a calculable renormalizable theory obeys the same extremality bound on the spin as the black hole. Correspondingly, a black hole with extremal spin emerges as a graviton condensate with vorticity. This offers a topological explanation for the stability of extremal black holes against Hawking evaporation. Next, we show that in the presence of mobile charges, the global vortex traps a magnetic flux of the gauge field. This can have macroscopically-observable consequences. For instance, the most powerful jets observed in active galactic nuclei can potentially be accounted for. As a signature, such emissions can occur even without a magnetized accretion disk surrounding the black hole. The flux entrapment can provide an observational window to various hidden sectors, such as millicharged dark matter.

6 pages, 2 figures; v2: changes to match published version

References in corpus (4)

• Ultralight scalars as cosmological dark matter
• The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. V. Rising X-ray Emission from an Off-Axis Jet
• How Special Are Black Holes? Correspondence with saturons in generic theories
• Black-Hole-Like Saturons in Gross-Neveu

Cited by in corpus (8)

• Primordial Black Holes
• Breakdown of Hawking Evaporation opens new Mass Window for Primordial Black Holes as Dark Matter Candidate
• Probing modified Hawking evaporation with gravitational waves from the primordial black hole dominated universe
• Ultralight Black Holes as Sources of High-Energy Particles
• The History of Primordial Black Holes
• Encoded information of mixed correlations: the views from one dimension higher
• Fast Pre-scramblers
• Similarities in the evaporation of saturated solitons and black holes