Quasinormal modes of the polytropic hydrodynamic vortex

Research output: Contribution to journal › Journal article › Research › peer-review

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Quasinormal modes of the polytropic hydrodynamic vortex. / Oliveira, Leandro A.; Cardoso, Vitor; Crispino, Luis C. B.

In: Physical Review D, Vol. 92, No. 2, 024033, 20.07.2015.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Oliveira, LA, Cardoso, V & Crispino, LCB 2015, 'Quasinormal modes of the polytropic hydrodynamic vortex', Physical Review D, vol. 92, no. 2, 024033. https://doi.org/10.1103/PhysRevD.92.024033

APA

Oliveira, L. A., Cardoso, V., & Crispino, L. C. B. (2015). Quasinormal modes of the polytropic hydrodynamic vortex. Physical Review D, 92(2), [024033]. https://doi.org/10.1103/PhysRevD.92.024033

Vancouver

Oliveira LA, Cardoso V, Crispino LCB. Quasinormal modes of the polytropic hydrodynamic vortex. Physical Review D. 2015 Jul 20;92(2). 024033. https://doi.org/10.1103/PhysRevD.92.024033

Author

Oliveira, Leandro A. ; Cardoso, Vitor ; Crispino, Luis C. B. / Quasinormal modes of the polytropic hydrodynamic vortex. In: Physical Review D. 2015 ; Vol. 92, No. 2.

Bibtex

@article{cbcf3ff0e0d8468796df35ad6d200b89,
title = "Quasinormal modes of the polytropic hydrodynamic vortex",
abstract = "Analogue systems are a powerful instrument to investigate and understand in a controlled setting many general-relativistic effects. Here, we focus on superradiant-triggered instabilities and quasinormal modes. We consider a compressible hydrodynamic vortex characterized by a polytropic equation of state, the polytropic hydrodynamic vortex, a purely circulating system with an ergoregion but no event horizon. We compute the quasinormal modes of this system numerically with different methods, finding excellent agreement between them. When the fluid velocity is larger than the speed of sound, an ergoregion appears in the effective spacetime, triggering an {"}ergoregion instability.{"} We study the details of the instability for the polytropic vortex, and in particular find analytic expressions for the marginally stable configuration.",
keywords = "BLACK-HOLES, ANALOG",
author = "Oliveira, {Leandro A.} and Vitor Cardoso and Crispino, {Luis C. B.}",
year = "2015",
month = jul,
day = "20",
doi = "10.1103/PhysRevD.92.024033",
language = "English",
volume = "92",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "2",

}

RIS

TY - JOUR

T1 - Quasinormal modes of the polytropic hydrodynamic vortex

AU - Oliveira, Leandro A.

AU - Cardoso, Vitor

AU - Crispino, Luis C. B.

PY - 2015/7/20

Y1 - 2015/7/20

N2 - Analogue systems are a powerful instrument to investigate and understand in a controlled setting many general-relativistic effects. Here, we focus on superradiant-triggered instabilities and quasinormal modes. We consider a compressible hydrodynamic vortex characterized by a polytropic equation of state, the polytropic hydrodynamic vortex, a purely circulating system with an ergoregion but no event horizon. We compute the quasinormal modes of this system numerically with different methods, finding excellent agreement between them. When the fluid velocity is larger than the speed of sound, an ergoregion appears in the effective spacetime, triggering an "ergoregion instability." We study the details of the instability for the polytropic vortex, and in particular find analytic expressions for the marginally stable configuration.

AB - Analogue systems are a powerful instrument to investigate and understand in a controlled setting many general-relativistic effects. Here, we focus on superradiant-triggered instabilities and quasinormal modes. We consider a compressible hydrodynamic vortex characterized by a polytropic equation of state, the polytropic hydrodynamic vortex, a purely circulating system with an ergoregion but no event horizon. We compute the quasinormal modes of this system numerically with different methods, finding excellent agreement between them. When the fluid velocity is larger than the speed of sound, an ergoregion appears in the effective spacetime, triggering an "ergoregion instability." We study the details of the instability for the polytropic vortex, and in particular find analytic expressions for the marginally stable configuration.

KW - BLACK-HOLES

KW - ANALOG

U2 - 10.1103/PhysRevD.92.024033

DO - 10.1103/PhysRevD.92.024033

M3 - Journal article

VL - 92

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 2

M1 - 024033

ER -

ID: 300072143