The Accelerating Universe
Dragan Huterer (University of Michigan)
TL;DR
This paper reviews the discovery of the universe's acceleration via type Ia supernovae, discusses dark energy phenomenology, and outlines methods to measure its large-scale properties, contributing to observational cosmology.
Contribution
It provides a comprehensive overview of observational evidence and techniques for studying dark energy, highlighting recent advances in cosmological measurements.
Findings
Confirmation of universe's acceleration from supernova data
Outline of methods to measure dark energy properties
Discussion of phenomenological models of dark energy
Abstract
In this article we review the discovery of the accelerating universe using type Ia supernovae. We then outline ways in which dark energy - component that causes the acceleration - is phenomenologically described. We finally describe principal cosmological techniques to measure large-scale properties of dark energy. This chapter complements other articles in this book that describe theoretical understanding (or lack thereof) of the cause for the accelerating universe.
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