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Non-linear structure formation and 'apparent' acceleration: An investigation

Biswas, T ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1088/1475-7516/2007/12/017
  3. Publisher: 2007
  4. Abstract:
  5. We present an analytically tractable non-linear model of structure formation in a Universe with only dust. The model is a Lematre-Tolman-Bondi 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 non-linear. A minimal effect is a correction in apparent magnitudes of order . We discuss different possibilities that could further enhance this effect and mimic dark energy. © IOP Publishing Ltd
  6. Keywords:
  7. Tractable non-linear model ; Structure formation ; Lemaître–Tolman–Bondi solution ; Distance–redshift relation ; Mimic dark energy ; Apparent acceleration ; Non-linear structure formation
  8. Source: Journal of Cosmology and Astroparticle Physics ; Volume 2007, Issue 12 , December , 2007 ; 14757516 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/1475-7516/2007/12/017