Stellar oscillons.

  title={Stellar oscillons.},
  author={Orkan M. Umurhan and Louis Tao and Edward A. Spiegel},
  journal={Annals of the New York Academy of Sciences},
We study the weakly nonlinear evolution of acoustic instability of a plane-parallel polytrope with thermal dissipation in the form of Newton's law of cooling. The most unstable horizontal wavenumbers form a band around zero and this permits the development of a nonlinear pattern theory leading to a complex Ginzburg-Landau equation (CGLE). Numerical solutions for a subcritical, quintic CGLE produce vertically oscillating, localized structures that resemble the oscillons observed in recent… CONTINUE READING

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