Generalized Ayón-Beato-García Black Holes and Joule-Thomson Expansion

Abstract

In this paper, the Joule-Thomson (JT) expansion is investigated for a generalized Ayón-Beato-García (ABG) black hole which is magnetically charged and asymptotically reaches to Anti-de Sitter (AdS) spacetime. This black hole is characterized with five parameters including mass m, magnetic charge q, and three parameters related to nonlinear electrodynamic fields namely α, β, and γ. As an extension of our previous work where we studied thermodynamics and phase transition of this black hole we now investigate JT expansion of it in the present work by plotting the inversion T-P curve and isenthalpic T-P diagrams. Inversion point in T-P phase space separates cooling and heating regimes of the black hole where the black hole parameters play important roles in the position of the inversion point.