The effect of nonlinear electrodynamics on Joule-Thomson expansion of a 5-dimensional charged AdS black hole in Einstein-Gauss-Bonnet gravity

We have studied in this paper the Joule-Thomson expansion of a new charged AdS black hole with a nonlinear electrodynamics in framework of Einstein-Gauss-Bonnet gravity in AdS space. We investigated effects of mass (m), electric charge (q), GB coupling constant (α) and nonlinear electrodynamics parameter (k) on Joule-Thomson expansion by depicting different graphs. The fact that inversion temperature tends to decrease by increasing k, is in contrast to the effect of electric charge. The divergent point as well as the zero point of Joule-Thomson coefficient are also discussed. Results show that, this black hole exhibits a phase transition similar to that of van der Waals system. Furthermore, the isonthalpic curve is obtained and an interesting dependence of these curves on charge and nonlinear electrodynamics parameter is revealed. In T−P graphs, the cooling region shrinks with charge, while this region expands both with mass and with nonlinear electrodynamics parameter. Our study shows that nonlinear electrodynamics parameter plays an important role in Joule Thomson expansion.

Abstract licence: CC BY

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