Observational Constraints on Cardassian Expansion

2002/11/30 by S. Sen, A. A. Sen · 2 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph #gr-qc #hep-ph

paper · pdf · doi:10.1086/373900

published as Astrophys.J. 588 (2003) 1-6 · Typos and some confusion with the notations corrected. Accepted for publication in The Astrophysical Journal

arxiv created 2003/01/15 · openalex publication_date 2003/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31

Abstract

In this work, we have studied the observational constraints on the Cardassian model for dark energy. We have compared the model with existing supernova data. The dependence of the locations of the cosmic microwave background radiation (CMBR) peaks on the parameters of the model have also been studied. We find, in particular, that observational data from Archeops for the location of the first peak and BOOMERANG for the location of the third peak, together with the supernova data, significantly constrain the parameter space.

Citations

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Cosmological consequences of a rolling homogeneous scalar field

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