Quasinormal modes, Superradiance and Area Spectrum for 2+1 Acoustic Black Holes

Preprint

11 January 2005

preprint
Published by arXiv in arXiv

Abstract

We present an exact expression for the quasinormal modes of acoustic disturbances in a rotating 2+1 dimensional sonic black hole (draining bathtub fluid flow) in the low frequency limit and evaluate the adiabatic invariant proposed by Kunstatter. We also compute,via Bohr-Sommerfeld quantization rule the equivalent area spectrum for this acoustic black hole, and we compute the superradiance phenomena for pure spinning 2+1 black holes.

Keywords

ACOUSTIC BLACK HOLE
QUASINORMAL MODES
SUPERRADIANCE
AREA SPECTRUM
QUANTIZATION
BLACK HOLE
FLUID FLOW

All Related Versions

Version 1, 2004-10-16, ArXiv
Version 2, 2005-01-11, ArXiv
Version 3, 2005-05-10, ArXiv
Published version: Physics Letters B, 617 (3-4), 174.

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