| Jean’s
Instability |
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| • | Jeans (1902)
tackled gravitational instability in |
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| a static
medium, dR/dt = 0 in eq. 11.24 we can |
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| get the
dispersion relation for waves of the |
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| form ∆=∆0
exp i (k∙r – ωt): |
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| • | This relation
describes oscillations or instability depending on the |
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| sign of the
right hand side. If positive,
oscillatory as pressure |
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| gradient
supports the region for wavelengths less than the critical |
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| Jean’s
wavelength: |
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