Speaker
Dr
Thierry Foglizzo
(CEA-Saclay, France)
Description
Massive stars end their life with the gravitational collapse of their core and the
formation of a neutron star. Their explosion as a supernova depends on the revival of a
spherical accretion shock, located in the inner 200km and stalled during a few hundred
milliseconds. Numerical simulations suggest that an asymmetric explosion is induced by
a hydrodynamical instability named SASI. Its non radial character is able to influence
the kick and the spin of the resulting neutron star. The SWASI experiment is a simple
shallow water analog of SASI, where the role of acoustic waves and shocks is played by
surface waves and hydraulic jumps. Distances in the experiment are scaled down by a
factor one million, and time is slower by a factor one hundred. This experiment is
designed to illustrate the asymmetric nature of core-collapse supernova.
Primary author
Dr
Thierry Foglizzo
(CEA-Saclay, France)
Co-authors
Dr
Frederic Masset
(ICF, UNAM, Mexico)
Gilles Durand
(CEA-Saclay, France)
Jerome Guilet
(DMTP Cambridge, UK)
