Acoustic analogues of black hole singularities

Details Acoustic analogues of black hole singularities Acoustic analogues of black hole singularities

2005-04-29

arxiv.org/abs/gr-qc/0504143v1

Phys.Rev. D72 (2005) 084012

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, no figures

Scientific paper

10.1103/PhysRevD.72.084012

We search for acoustic analogues of a spherical symmetric black hole with a pointlike source. We show that the gravitational system has a dynamical counterpart in the constrained, steady motion of a fluid with a planar source. The equations governing the dynamics of the gravitational system can be exactly mapped in those governing the motion of the fluid. The different meaning that singularities and sources have in fluid dynamics and in general relativity is also discussed. Whereas in the latter a pointlike source is always associated with a (curvature) singularity in the former the presence of sources does not necessarily imply divergences of the fields.

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