The Jeans Instability in Presence of Viscous Effects

  title={The Jeans Instability in Presence of Viscous Effects},
  author={Nakia Carlevaro and Giovanni Montani},
  journal={arXiv: General Relativity and Quantum Cosmology},
An analysis of the gravitational instability in presence of dissipative effects is addressed. In particular, the standard Jeans Mechanism and the generalization in treating the Universe expansion are both analyzed when bulk viscosity affects the first-order Newtonian dynamics. As results, the perturbation evolution is founded to be damped by dissipative processes and the top-down mechanism of structure fragmentation is suppressed. In such a scheme, the value of the Jeans Mass remains unchanged… 

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