Measuring dark energy spatial inhomogeneity with supernova data

Details Measuring dark energy spatial inhomogeneity with supernova data Measuring dark energy spatial inhomogeneity with supernova data

2008-12-01

arxiv.org/abs/0812.0376v1

JCAP 1011:015,2010

Astronomy and Astrophysics

Astrophysics

4 pages; PRL submitted

Scientific paper

10.1088/1475-7516/2010/11/015

The gravitational lensing distortion of distant sources by the large-scale distribution of 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 a fractional energy density of ~10^-4

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