A Shallow Water Analogue of the Standing Accretion Shock Instability: Experimental Demonstration and Two-Dimensional Model

Thierry Foglizzo; Frédéric Masset; Jérôme Guilet; Gilles Durand

doi:10.1103/physrevlett.108.051103

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arXiv · 1112.3448

A Shallow Water Analogue of the Standing Accretion Shock Instability: Experimental Demonstration and Two-Dimensional Model

Thierry Foglizzo·Frédéric Masset·Jérôme Guilet·Gilles Durand

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Abstract

Despite the sphericity of the collapsing stellar core, the birth conditions of neutron stars can be highly non spherical due to a hydrodynamical instability of the shocked accretion flow. Here we report the first laboratory experiment of a shallow water analogue, based on the physics of hydraulic jumps. Both the experiment and its shallow water modeling demonstrate a robust linear instability and nonlinear properties of symmetry breaking, in a system which is one million times smaller and about hundred times slower than its astrophysical analogue.

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Thierry Foglizzo, Frédéric Masset, Jérôme Guilet, Gilles Durand. 2011-12-15. A Shallow Water Analogue of the Standing Accretion Shock Instability: Experimental Demonstration and Two-Dimensional Model. https://doi.org/10.1103/physrevlett.108.051103

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