Cosmology explores the origin and structure of the Universe to reveal the basic constituents of nature.
CMB, SZ Effect, and Strong Lensing
The South Pole Telescope (SPT), a 10-meter mm-wave telescope located at the geographic south pole, has been one of the premier cosmological experiments of the last decade. With SPT, we made the first sensitive measurements of the CMB small-scale anisotropies, constrained cosmological parameters, made the first discovery of galaxy clusters via the Sunyaev-Zel'dovich Effect, discovered high-redshift strongly lensed galaxies, and measured CMB lensing B- modes for the first time. We have now deployed the third-generation camera for the SPT and are analyzing the data.
PRIMORDIAL GRAVITATIONAL WAVES
An epoch of rapid expansion in the early universe, known as “inflation”, is thought to have set the stage for the evolution of cosmic structure. This process should also have seeded the universe with a faint hum of primordial gravitational waves, undetectable today but visible as a faint pattern in the polarization of the cosmic microwave background (CMB). Illinois collaborates on instrumentation and data analysis for leading teams seeking to constrain this elusive signature from the South Pole (BICEP) and stratospheric balloons (SPIDER), as well as on future efforts to probe fundamental physics with novel low-temperature detector technology.
Primordial Nucleosynthesis and Particle Dark Matter
The lightest and most abundant elements in the universe were forged from a primordial soup of subatomic particles during the first three minutes of cosmic time. Our group performs state-of-the-art calculations of the primordial abundances of the elements. By combining these theoretical predictions with astronomical observations of light elements and of the cosmic microwave background radiation, we wield the earliest reliable probe of the cosmos. At even earlier times, even higher-energy interactions likely gave rise to exotic particles that gave rise to dark matter today. We use primordial nucleosynthesis and other astrophysical observations to probe dark matter particle physics.
Links to research groups and facilities: Brian Fields
Faculty Interested in Cosmology
|Physics of Inflation in the Early Universe ; Connections Between High-Energy Particle Physics and the Early Universe|
|Cosmology, extragalactic astronomy, machine and deep learning, especially in large scale structure, galaxy formation and evolution, environmental dependence of galaxy properties and photometric redshift estimation.|
|Theoretical high energy particle physics and cosmology, including the Higgs boson, axions and the strong CP problem, supersymmetry, and nonperturbative phenomena in quantum field theories, among others.|
|Cosmology, Nuclear and Particle Astrophysics; Nucleosynthesis; Dark Matter; Cosmic-ray, Gamma-ray, and Neutrino Astrophysics; Supernovae; Astrobiology|
|Observational Cosmology; Particle Astrophysics; Instrumentation|
|Cosmic Microwave Background; Gravitational Lensing; Dark Matter; Dark Energy; Black Holes|
|Astronomical Survey and Data Science; Origin and Cosmic Evolution of Galaxies and Galactic Nuclei; The Nature of Black Holes and Gravity|
|Observational Cosmology; Clusters of Galaxies and Sunyaev-Zeldovich Effect; Large Surveys; Data Analysis Pipelines for Surveys; Algorithms for Data Mining; Galaxy Formation and Evolution|
|Computational Astrophysics; Cosmological Structure Formation; Clusters of Galaxies; Binary Stars; Supernovae|
|Multimessenger Astronomy; Numerical Relativity; Gravitational Waves; Scientific Computing; Data Science|
|General Relativity; Numerical Relativity; Gravitational Wave Astrophysics; Computational Magnetohydrodynamics and Stellar Dynamics; Cosmology|
|Dark Matter; Particle Astrophysics; Particle Physics of the Early Universe|
|Cosmology; Extragalactic Surveys; Galaxy Evolution; Instrumentation; Observation|