Nonlinear Structure Formation and "Apparent" Acceleration: an Investigation

Details Nonlinear Structure Formation and "Apparent" Acceleration: an Investigation Nonlinear Structure Formation and "Apparent" Acceleration: an Investigation

2006-06-28

arxiv.org/abs/astro-ph/0606703v2

JCAP0712:017,2007

Astronomy and Astrophysics

Astrophysics

57 pages, 13 figures. Formatting errors fixed

Scientific paper

10.1088/1475-7516/2007/12/017

We present an analytically solvable nonlinear model of structure formation in a Universe with only dust. The model is an LTB solution (of General Relativity) and structures are shells of different density. We show that the luminosity distance-redshift relation has significant corrections at low redshift when the density contrast becomes nonlinear. A minimal effect is a correction in apparent magnitudes of order 0.15. We discuss different possibilities that could further enhance this effect and mimick Dark Energy.

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