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Superradiance or Total Reflection?

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Relativity and Gravitation

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 157))

Abstract

Numerical evolution of massless scalar fields on Kerr background is studied. The initial data is chosen to have compact support separated from the ergoregion and to yield nearly monochromatic incident wave packets. The initial data is also tuned to maximize the effect of superradiance. We give evidence indicating that instead of the anticipated energy extraction from the black hole the incident radiation fails to reach the ergoregion and instead it suffers a nearly perfect reflection.

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Notes

  1. 1.

    Note that on all the included 2-dimensional plots the indicated quantities are integrated with respect to the radial degrees of freedom.

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Acknowledgments

This research was supported in part by OTKA grant K67942.

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Authors and Affiliations

  1. CERN, 1211, Genéve 23, Switzerland

    András László

  2. Wigner RCP, Budapest, 1121, Hungary

    András László & István Rácz

Authors
  1. András László
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  2. István Rácz
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Corresponding author

Correspondence to István Rácz .

Editor information

Editors and Affiliations

  1. Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic

    Jiří Bičák

  2. Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic

    Tomáš Ledvinka

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László, A., Rácz, I. (2014). Superradiance or Total Reflection?. In: Bičák, J., Ledvinka, T. (eds) Relativity and Gravitation. Springer Proceedings in Physics, vol 157. Springer, Cham. https://doi.org/10.1007/978-3-319-06761-2_15

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