Optimization of powered aero-assisted maneuvers controlling the aerodynamic angles
Superradiance and Hawking radiation in hydrodynamical vortex flows
| Full text | |
| Author(s): |
Casadio, R.
;
Souza, C. Noberto
;
da Rocha, R.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | EUROPEAN PHYSICAL JOURNAL C; v. 84, n. 8, p. 23-pg., 2024-08-01. |
| Abstract | |
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-Nordstr & ouml;m 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. (AU) | |
| FAPESP's process: | 22/01734-7 - Gauge/gravity dualities, Navier-Stokes equations with soft-hair, and Dirac fluids |
| Grantee: | Roldão da Rocha |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 21/01089-1 - Cherenkov Telescope Array: construction and first discoveries |
| Grantee: | Luiz Vitor de Souza Filho |
| Support Opportunities: | Special Projects |