Measuring dark energy spatial inhomogeneity with supernova data

2008/12/01 by Asantha Cooray, D. E. Holz, Daniel E. Holz +2 · 2 citations
Physics and Astronomy · #Astronomy #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae #Physics #Supernova #astro-ph

paper · pdf · doi:10.1088/1475-7516/2010/11/015

published as JCAP 1011:015,2010 · 4 pages; PRL submitted

arxiv created 2008/12/01 · openalex publication_date 2010/11/16 · arxiv updated 2010/11/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The gravitational lensing distortion of distant sources by the matter in the Universe has been extensively studied. In contrast, very little is known about the effects due to the large-scale distribution of dark energy. We discuss the use of Type Ia supernovae as probes of the spatial inhomogeneity and anisotropy of dark energy. We show that a shallow, almost all-sky survey can limit rms dark energy fluctuations at the horizon scale down to ∼ 10 −3 of the energy density.

Citations

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• On cosmic acceleration without dark energy
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Cited by

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