Dynamic voids surrounded by shocked conventional polytropic gas envelopes

  title={Dynamic voids surrounded by shocked conventional polytropic gas envelopes},
  author={Yu-qing Lou and Lile Wang},
  journal={Monthly Notices of the Royal Astronomical Society},
  • Y. Lou, Lile Wang
  • Published 13 September 2011
  • Physics
  • Monthly Notices of the Royal Astronomical Society
With proper physical mechanisms of energy and momentum input from around the centre of a self-gravitating polytropic gas sphere, a central spherical ‘void’ or ‘cavity’ or ‘bubble’ of very much less mass contents may emerge and then dynamically expand into a variety of surrounding more massive gas envelopes with or without shocks. We explore self-similar evolution of a self-gravitating polytropic hydrodynamic flow of spherical symmetry with such an expanding ‘void’ embedded around the centre… 
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