https://doi.org/10.1140/epjc/s10052-024-13131-8
Regular Article - Theoretical Physics
Gravitational decoupling and aerodynamics: black holes and analog gravity in a jet propulsion lab
1
Dipartimento di Fisica e Astronomia, Università di Bologna, via Irnerio 46, 40126, Bologna, Italy
2
I.N.F.N., Sezione di Bologna, I.S. FLAG, viale B. Pichat 6/2, 40127, Bologna, Italy
3
Center for Natural and Human Sciences, Federal University of ABC, 09210-580, Santo André, Brazil
4
Center of Mathematics, Federal University of ABC, 09210-580, Santo André, Brazil
Received:
13
June
2024
Accepted:
16
July
2024
Published online:
1
August
2024
A connection is established between transonic sound waves propagating along a de Laval nozzle and quasinormal modes emitted from hairy black holes obtained with the gravitational decoupling method applied to the Reissner–Nordström geometry. Aerodynamical features provide an analogue setup to test experimentally perturbations of fluid flows in a de Laval nozzle producing quasinormal modes. In particular, nozzle shape, pressure, Mach number, temperature, density, and thrust coefficient profiles are determined as functions of the black hole parameters for several multipole numbers. The black hole quasinormal mode frequencies are also investigated for different overtones, evaluating the quality factor of the nozzle.
© The Author(s) 2024
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