Formation of cosmological mass condensation within a FRW universe: exact general relativistic solutions

Details Formation of cosmological mass condensation within a FRW universe: exact general relativistic solutions Formation of cosmological mass condensation within a FRW universe: exact general relativistic solutions

2003-07-06

arxiv.org/abs/gr-qc/0307023v1

Phys.Rev. D65 (2002) 027302

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages

Scientific paper

10.1103/PhysRevD.65.027302

Within the framework of an exact general relativistic formulation of gluing manifolds, we consider the problem of matching an inhomogeneous overdense region to a Friedmann-Robertson-Walker background universe in the general spherical symmetric case of pressure-free models. It is shown that, in general, the matching is only possible through a thin shell, a fact ignored in the literature. In addition to this, in subhorizon cases where the matching is possible, an intermediate underdense region will necessarily arise.

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