Detecting dark energy with wavelets on the sphere

TL;DR

This paper reviews wavelet analysis on the sphere to independently verify dark energy's existence by detecting the integrated Sachs-Wolfe effect, providing significant statistical evidence and constraining dark energy properties.

Contribution

It demonstrates the effectiveness of wavelet analysis on the sphere for detecting dark energy and constraining its properties, supporting the cosmological concordance model.

Findings

Highly statistically significant detections of dark energy

Wavelet analysis effectively detects the integrated Sachs-Wolfe effect

Results support the cosmological concordance model

Abstract

Dark energy dominates the energy density of our Universe, yet we know very little about its nature and origin. Although strong evidence in support of dark energy is provided by the cosmic microwave background, the relic radiation of the Big Bang, in conjunction with either observations of supernovae or of the large scale structure of the Universe, the verification of dark energy by independent physical phenomena is of considerable interest. We review works that, through a wavelet analysis on the sphere, independently verify the existence of dark energy by detecting the integrated Sachs-Wolfe effect. The effectiveness of a wavelet analysis on the sphere is demonstrated by the highly statistically significant detections of dark energy that are made. Moreover, the detection is used to constrain properties of dark energy. A coherent picture of dark energy is obtained, adding further support to the now well established cosmological concordance model that describes our Universe.