Detecting Rotational Superradiance in Fluid Laboratories

Research output: Contribution to journal › Letter › Research › peer-review

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Detecting Rotational Superradiance in Fluid Laboratories. / Cardoso, Vitor; Coutant, Antonin; Richartz, Mauricio; Weinfurtner, Silke.

In: Physical Review Letters, Vol. 117, No. 27, 271101, 29.12.2016.

Research output: Contribution to journal › Letter › Research › peer-review

Harvard

Cardoso, V, Coutant, A, Richartz, M & Weinfurtner, S 2016, 'Detecting Rotational Superradiance in Fluid Laboratories', Physical Review Letters, vol. 117, no. 27, 271101. https://doi.org/10.1103/PhysRevLett.117.271101

APA

Cardoso, V., Coutant, A., Richartz, M., & Weinfurtner, S. (2016). Detecting Rotational Superradiance in Fluid Laboratories. Physical Review Letters, 117(27), [271101]. https://doi.org/10.1103/PhysRevLett.117.271101

Vancouver

Cardoso V, Coutant A, Richartz M, Weinfurtner S. Detecting Rotational Superradiance in Fluid Laboratories. Physical Review Letters. 2016 Dec 29;117(27). 271101. https://doi.org/10.1103/PhysRevLett.117.271101

Author

Cardoso, Vitor ; Coutant, Antonin ; Richartz, Mauricio ; Weinfurtner, Silke. / Detecting Rotational Superradiance in Fluid Laboratories. In: Physical Review Letters. 2016 ; Vol. 117, No. 27.

Bibtex

@article{f6f2c900667949bfa4347f0cd6cb6997,
title = "Detecting Rotational Superradiance in Fluid Laboratories",
abstract = "Rotational superradiance was predicted theoretically decades ago, and is chiefly responsible for a number of important effects and phenomenology in black-hole physics. However, rotational superradiance has never been observed experimentally. Here, with the aim of probing superradiance in the lab, we investigate the behavior of sound and surface waves in fluids resting in a circular basin at the center of which a rotating cylinder is placed. We show that with a suitable choice for the material of the cylinder, surface and sound waves are amplified. Two types of instabilities are studied: one sets in whenever superradiant modes are confined near the rotating cylinder and the other, which does not rely on confinement, corresponds to a local excitation of the cylinder. Our findings are experimentally testable in existing fluid laboratories and, hence, offer experimental exploration and comparison of dynamical instabilities arising from rapidly rotating boundary layers in astrophysical as well as in fluid dynamical systems.",
keywords = "GRAVITY-WAVES, BLACK-HOLE, AMPLIFICATION, REFLECTION, STABILITY",
author = "Vitor Cardoso and Antonin Coutant and Mauricio Richartz and Silke Weinfurtner",
year = "2016",
month = dec,
day = "29",
doi = "10.1103/PhysRevLett.117.271101",
language = "English",
volume = "117",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "27",

}

RIS

TY - JOUR

T1 - Detecting Rotational Superradiance in Fluid Laboratories

AU - Cardoso, Vitor

AU - Coutant, Antonin

AU - Richartz, Mauricio

AU - Weinfurtner, Silke

PY - 2016/12/29

Y1 - 2016/12/29

N2 - Rotational superradiance was predicted theoretically decades ago, and is chiefly responsible for a number of important effects and phenomenology in black-hole physics. However, rotational superradiance has never been observed experimentally. Here, with the aim of probing superradiance in the lab, we investigate the behavior of sound and surface waves in fluids resting in a circular basin at the center of which a rotating cylinder is placed. We show that with a suitable choice for the material of the cylinder, surface and sound waves are amplified. Two types of instabilities are studied: one sets in whenever superradiant modes are confined near the rotating cylinder and the other, which does not rely on confinement, corresponds to a local excitation of the cylinder. Our findings are experimentally testable in existing fluid laboratories and, hence, offer experimental exploration and comparison of dynamical instabilities arising from rapidly rotating boundary layers in astrophysical as well as in fluid dynamical systems.

AB - Rotational superradiance was predicted theoretically decades ago, and is chiefly responsible for a number of important effects and phenomenology in black-hole physics. However, rotational superradiance has never been observed experimentally. Here, with the aim of probing superradiance in the lab, we investigate the behavior of sound and surface waves in fluids resting in a circular basin at the center of which a rotating cylinder is placed. We show that with a suitable choice for the material of the cylinder, surface and sound waves are amplified. Two types of instabilities are studied: one sets in whenever superradiant modes are confined near the rotating cylinder and the other, which does not rely on confinement, corresponds to a local excitation of the cylinder. Our findings are experimentally testable in existing fluid laboratories and, hence, offer experimental exploration and comparison of dynamical instabilities arising from rapidly rotating boundary layers in astrophysical as well as in fluid dynamical systems.

KW - GRAVITY-WAVES

KW - BLACK-HOLE

KW - AMPLIFICATION

KW - REFLECTION

KW - STABILITY

U2 - 10.1103/PhysRevLett.117.271101

DO - 10.1103/PhysRevLett.117.271101

M3 - Letter

VL - 117

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 27

M1 - 271101

ER -

ID: 299819236