On the Newtonian cosmology equations with pressure

Nov, 1996
8 pages
Published in:
  • Mon.Not.Roy.Astron.Soc. 291 (1997) L1-L4
e-Print:
Report number:
  • BROWN-HET-1063

Citations per year

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Abstract: (arXiv)
The basic equations describing a Newtonian universe with uniform pressure are reexamined. We argue that in the semi-classical formulation adopted in the literature the continuity equation has a misleading pressure gradient term. When this term is removed, the resulting equations give the same homogeneous background solutions with pressure and the same evolution equation for the density contrast as are obtained using the full relativistic approach.