Survey delivers on dark energy with multiple probes

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Published on: November 6, 2019
Researchers used the Blanco telescope in conducting the Dark Energy Survey. The Milky Way is on the left of the sky, with the Magellanic clouds in the center. Photo: Reidar Hahn

The Dark Energy Survey is the first experiment to demonstrate the immense power and promise of this combined-probes approach to survey design. The combined-probes approach is the basis for all major next-generation dark energy experiments in the 2020s including the Large Synoptic Survey Telescope. It enables scientists to make the most precise measurement of dark energy possible while protecting against measurement bias.

By Michael Troxel. You can read the article here, at the Fermilab News web site.

Survey delivers on dark energy with multiple probes

Published on: September 25, 2019
Researchers used the Blanco telescope in conducting the Dark Energy Survey. The Milky Way is on the left of the sky, with the Magellanic clouds in the center. Photo: Reidar Hahn

Why is our universe accelerating in its expansion? If Einstein’s theory of general relativity is correct, then the dark energy that drives this expansion accounts for nearly 70% of the total energy in the universe. However, precise measurements of the history of this expansion may reveal that new dynamic forces are in play. The Dark Energy Survey has combined its four primary cosmological probes for the first time in order to constrain the properties of dark energy. These first combined constraints are competitive with previous experiments and will improve as more data is analyzed.

By  Michael Troxel. You can read the article at Fermilab’s web site.

Our gothic universe

Categories: Physics in a Nutshell
Published on: January 29, 2017

An introduction to the concept of “dark energy.”

http://news.fnal.gov/2012/02/our-gothic-universe/, by Don Lincoln.

Cosmic shear cosmology with the Dark Energy Survey

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Published on: September 5, 2015

Using the Dark Energy Survey to see gravity microlensing through the universe.

http://www.elliottmccrory.com/wp/wp-content/uploads/2015/09/2015-07-24.mp3

Dark Energy Survey discovers exotic type of supernova

Published on: July 7, 2014

Super-duper supernova (a.k.a., SLSNe) seen by the Dark Energy Survey.

http://www.fnal.gov/pub/today/archive/archive_2014/today14-06-27.html, by Chris D’Andrea and Andreas Papadopoulos.

The Dark Energy Survey looks at massive galaxy clusters – and finds filaments

Published on: June 11, 2014

In the first paper based upon Dark Energy Survey data, scientists demonstrated that the new camera and revamped telescope worked together as expected.

http://www.fnal.gov/pub/today/archive/archive_2014/today14-05-30.html, by Peter Melchior, Ohio State University.

Sloan Digital Sky Survey and the cosmological constant

Categories: Cosmic Frontier
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Published on: April 11, 2014

The Sloan Digital Sky Survey shows that the expansion of the universe is experimentally consistent with Einstein’s Cosmological Constant.

http://www.fnal.gov/pub/today/archive/archive_2014/today14-04-04.html, by John Marriner.

Cosmic shadows in the microwave light from the big bang

Categories: Cosmic Frontier
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Published on: March 7, 2014

Looking for dark energy through two very different sorts of telescopes.

http://www.fnal.gov/pub/today/archive/archive_2014/today14-02-21.html, by Brandon Benson.

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