Cosmology

DESI

Lead: Martin White

The Dark Energy Spectroscopic Instrument (DESI) will obtain optical spectra for tens of millions of galaxies and quasars, constructing a 3D map spanning the nearby universe to 11 billion light years.

Hydrogen Epoch of Reionization Array

Lead: Aaron Parsons

The Hydrogen Epoch of Reionization Array (HERA) is a focused experiment to detect and characterize the signature of the Epoch of Reionization by observing highly red-shifted neutral hydrogen

HYPERION

Lead: Aaron Parsons

The Hydrogen Probe of the Epoch of Reionization (HYPERION) is a specialized low-frequency interferometer to study the Epoch of Reionization through the spatial monopole of the 21cm brightness temperature of neutral hydrogen as a function of redshift (i.e. the ''global signal"). The goal of HYPERION is to detect the monopole reionization signal. A detection of this signal could give key insights into the physics and development of our early universe, including information on the formation of the first stars and galaxies.

LSST-DESC

The nature of Dark Energy is one of the greatest mysteries in science today. It was discovered in 1998, when scientists found that the expansion of the universe is accelerating. We call the force driving this expansion Dark Energy, but beyond that we know very little. The Large Synoptic Survey Telescope (LSST) will produce a unique dataset of billions of galaxies, which will allow us to measure how Dark Energy behaves over time with unprecedented precision. The LSST dataset will also enable us to tackle several other questions in cosmology and fundamental physics. The LSST Dark Energy Science Collaboration (LSST DESC) will prepare for and carry out a variety of cosmological analyses with the LSST survey. In advance of LSST's first observations, DESC will help prepare for LSST science analysis, make synergistic connections with ongoing cosmological surveys and provide the dark energy community with state of the art analysis tools.