J. Phys. IV France
Volume 133, June 2006
Page(s) 1055 - 1057
Publié en ligne 16 juin 2006
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 1055-1057

DOI: 10.1051/jp4:2006133214

Non-stationary Rayleigh-Taylor instability in plerions

X. Ribeyre1, L. Hallo1, V.T. Tikhonchuk1 and S. Bouquet2

1  Centre Lasers Intenses et Applications, UMR 5107, CNRS CEA, Université Bordeaux 1, 351 cours de la Libération, 33405 Talence, France
2  Commissariat à l'Énergie Atomique, DIF/DPTA, 91680 Bruyères le Châtel, France

The Rayleigh-Taylor instability (RTI) plays an important role in the dynamics of several astronomical objects, in particular, in supernovae (SN) evolution. In this paper we develop an analytical approach for the stability analysis of spherical expansion of the SN ejecta. We study a non-stationary spherical expansion of a gas shell under the pressure of a central source. Then we analyze its stability with respect to angular perturbations. The growth rate is found and the temporal and spatial evolution of the perturbed shell is discussed. Finally, we propose a specific laser experiment to test our model.

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