Supernova Cosmology and the ESSENCE project

Jesper Sollerman; Claudio Aguilera; Andy Becker; Stephane Blondin; Pete Challis; Alejandro Clocchiatti; Alex Filippenko; Ryan Foley; Peter M. Garnavich; Malcolm Hicken; Saurabh Jha; Robert Kirshner; Kevin Krisciunas; Bruno Leibundgut; Weidong Li; Thomas Matheson; Gajus Miknaitis; Armin Rest; Adam G. Riess; Maria Elena Salvo; Brian P. Schmidt; Chris Smith; Jason Spyromilio; Chris Stubbs; Nicholas B. Suntzeff; John L. Tonry; Michael Wood-Vasey; Brian Barris; Tamara Davis; Edvard Mortsell

arXiv · astro-ph/0510026

Supernova Cosmology and the ESSENCE project

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Abstract

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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Jesper Sollerman, Claudio Aguilera, Andy Becker, Stephane Blondin, Pete Challis, Alejandro Clocchiatti, Alex Filippenko, Ryan Foley, Peter M. Garnavich, Malcolm Hicken, Saurabh Jha, Robert Kirshner, Kevin Krisciunas, Bruno Leibundgut, Weidong Li, Thomas Matheson, Gajus Miknaitis, Armin Rest, Adam G. Riess, Maria Elena Salvo, Brian P. Schmidt, Chris Smith, Jason Spyromilio, Chris Stubbs, Nicholas B. Suntzeff, John L. Tonry, Michael Wood-Vasey, Brian Barris, Tamara Davis, Edvard Mortsell. 2005-10-02. Supernova Cosmology and the ESSENCE project. https://arxiv.org/abs/astro-ph/0510026

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