Dark Energy Survey | Wikipedia audio article
Channel: wikipedia tts
Date: 08/12/2018

This is an audio version of the Wikipedia Article:
Dark Energy Survey


00:01:15 1 Overview
00:04:33 2 DECam
00:04:55 2.1 Mechanics
00:05:48 2.2 Optics
00:06:32 2.3 CCDs
00:08:20 3 Survey
00:09:42 4 Supernovae
00:09:50 4.1 Applications in cosmology
00:11:45 4.2 Supernova data
00:17:35 4.3 Supernovae measurements in DES
00:18:57 5 Baryon Acoustic Oscillations (BAO)
00:19:07 5.1 Overview of physics
00:21:39 5.2 BAO as a tool for cosmology
00:28:46 5.3 BAO observations in DES
00:33:59 6 Galaxy cluster counts
00:35:30 6.1 Predicting number counts of galaxy clusters
00:44:15 6.2 Calculating observable counts
00:48:03 6.3 Cluster finding
00:50:22 7 Weak lensing
00:53:17 7.1 Systematics
00:55:01 7.2 Results
00:55:36 8 Dwarf Galaxies
00:56:37 8.1 Results
00:57:16 9 Solar System
00:58:57 9.1 List of discovered minor planets
00:59:07 10 Data management



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SUMMARY
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The Dark Energy Survey (DES) is a visible and near-infrared survey that aims to probe the dynamics of the expansion of the Universe and the growth of large-scale structure. The collaboration is composed of research institutions and universities from the United States, Brazil, the United Kingdom, Germany, Spain, and Switzerland.
The survey uses the 4-meter Victor M. Blanco Telescope located at Cerro Tololo Inter-American Observatory (CTIO) in Chile, outfitted with the Dark Energy Camera (DECam). This camera allows for more sensitive images in the red part of the visible spectrum and in the near infrared, in comparison to previous instruments.DECam has one of the widest fields of view (2.2-degree diameter) available for ground-based optical and infrared imaging. The survey will image 5,000 square degrees of the southern sky in a footprint that overlaps with the South Pole Telescope and Stripe 82 (in large part avoiding the Milky Way). The survey will take five years to complete, and the survey footprint will nominally be covered ten times in five photometric bands (g, r, i, z, and Y). DES officially began in August 2013 and completed its second season in February 2015.