# Dynamic evolution model of isothermal voids and shocks

@article{Lou2009DynamicEM, title={Dynamic evolution model of isothermal voids and shocks}, author={Yu-qing Lou and Xiang Zhai}, journal={Astrophysics and Space Science}, year={2009}, volume={323}, pages={17-40} }

AbstractWe explore self-similar hydrodynamic evolution of central voids embedded in an isothermal gas of spherical symmetry under the self-gravity. More specifically, we study voids expanding at constant radial speeds in an isothermal gas and construct all types of possible void solutions without or with shocks in surrounding envelopes. We examine properties of void boundaries and outer envelopes. Voids without shocks are all bounded by overdense shells and either inflows or outflows in the…

## 7 Citations

Dynamic voids surrounded by shocked conventional polytropic gas envelopes

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We study the hydrodynamic self-similar mass collapses of general polytropic (GP) spherical clouds to central Schwarzschild black holes and void evolution with or without shocks. In order to grossly…

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