In this paper we study the gravitational instability in presence of viscosity. In particular, the standard Jeans Mechanism is analyzed taking into account bulk-viscosity effects in the first-order Newtonian dynamics. We show how the perturbation evolution is dumped by dissipative processes and the top-down fragmentation mechanism is suppressed for strong viscous effects. The critical value of the Jeans Mass remains unchanged also in presence of bulk viscosity.
Titolo: | The Jeans Mechanism and bulk-viscosity effects |
Autori: | |
Data di pubblicazione: | 2016 |
Handle: | http://hdl.handle.net/20.500.12079/3429 |
ISBN: | 9781904868736 |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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