Gauge-invariant treatment of the integrated Sachs-Wolfe effect on general spherically symmetric spacetimes

Details Gauge-invariant treatment of the integrated Sachs-Wolfe effect on general spherically symmetric spacetimes Gauge-invariant treatment of the integrated Sachs-Wolfe effect on general spherically symmetric spacetimes

2009-12-24

arxiv.org/abs/0912.4773v2

Phys.Rev.D81:063509,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages

Scientific paper

10.1103/PhysRevD.81.063509

On the basis of the Gerlach-Sengupta theory of gauge-invariant perturbations, a formula of the integrated Sachs-Wolfe effect for a central observer is derived on general spherically symmetric spacetimes. It will be useful for comparative studies of theoretical and observational aspects of the integrated Sachs-Wolfe effect in the Lemaitre-Tolman-Bondi cosmological models which have been noticed by explaining the apparent acceleration without cosmological constant.

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