Supernova Cosmology and the ESSENCE project

Details Supernova Cosmology and the ESSENCE project Supernova Cosmology and the ESSENCE project

2005-10-02

arxiv.org/abs/astro-ph/0510026v1

Proceedings of the EPS-13 Conference "Beyond Einstein - Physics for the 21st Century". University of Bern, Switzerland. Editor

Astronomy and Astrophysics

Astrophysics

Submitted to EPS13

Scientific paper

The proper usage of Type Ia supernovae (SNe Ia) as distance indicators has revolutionized cosmology, and added a new dominant component to the energy density of the Universe, dark energy. Following the discovery and confirmation era, the currently ongoing SNe Ia surveys aim to determine the properties of the dark energy. ESSENCE is a five year ground-based supernova survey aimed at finding and characterizing 200 SNe Ia in the redshift domain z=[0.2-0.8]. The goal of the project is to put constraints on the equation of state parameter, w, of the dark energy with an accuracy of <10%. This paper presents these ongoing efforts in the context of the current developments in observational cosmology.

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