Superresonance Phenomenon from Acoustic Black Holes in Neo-Newtonian theory

TL;DR

This paper investigates the acoustic super-radiance phenomenon in neo-Newtonian fluid models, showing how the neo-Newtonian parameter influences wave amplification and the black hole's mass loss rate.

Contribution

It introduces the effect of neo-Newtonian parameters on acoustic super-radiance and frequency intervals in rotating acoustic black holes.

Findings

Frequency intervals depend on the neo-Newtonian parameter  ; 

Tuning   affects the rate of mass loss in acoustic black holes.

The super-radiance phenomenon is modulated by pressure and neo-Newtonian effects.

Abstract

We explore the possibility of the acoustic analogue of a super-radiance like phenomenon, i.e., the amplification of a sound wave by reflection from the ergo-region of a rotating acoustic black hole in the fluid draining bathtub model in the presence of the pressure be amplified or reduced in agreement with the value of the parameter $\left(\gamma=1+ \frac{kn\rho_0^{n-1} }{c^2}\right)$. We remark that the interval of frequencies depend upon the neo-newtonian parameter $\gamma$\, ($\bar{\Omega}_H = \frac{2 }{1+\gamma}\;\Omega_{H}$)\textbf{ and becomes narrow in this work}. As a consequence, the tuning of the neo-newtonian parameter $\left(\gamma=1+ \frac{kn\rho_0^{n-1} }{c^2}\right)$ changes the rate of loss of the acoustic black hole mass.