Physical cosmology is a branch of cosmology concerned with the study of cosmological models. A cosmological model, or simply cosmology, provides a description of the largest-scale structures and dynamics of the universe and allows study of fundamental questions about its origin, structure, evolution, and ultimate fate. Cosmology as a science originated with the Copernican principle, which implies that celestial bodies obey identical physical laws to those on Earth, and Newtonian mechanics, which first allowed those physical laws to be understood.
Astronomy is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole.
The Niels Bohr Institute is a research institute of the University of Copenhagen. The research of the institute spans astronomy, geophysics, nanotechnology, particle physics, quantum mechanics and biophysics.
Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline said, Astrophysics "seeks to ascertain the nature of the heavenly bodies, rather than their positions or motions in space–what they are, rather than where they are." Among the subjects studied are the Sun, other stars, galaxies, extrasolar planets, the interstellar medium and the cosmic microwave background. Emissions from these objects are examined across all parts of the electromagnetic spectrum, and the properties examined include luminosity, density, temperature, and chemical composition. Because astrophysics is a very broad subject, astrophysicists apply concepts and methods from many disciplines of physics, including classical mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic and molecular physics.
Marc Davis is an American Professor of Astronomy and Physics at the University of California, Berkeley. Davis received his bachelor's degree from the Massachusetts Institute of Technology in 1969, his Ph.D from Princeton University in 1973 and has been elected to both the National Academy of Sciences (1991) and the American Academy of Arts and Sciences (1992). Davis taught for a year at Princeton, 1973–74, then served on the Astronomy faculty at Harvard from 1975 to 1981. Since 1981 he has been on the faculty of the Department of Astronomy and Physics at the University of California at Berkeley.
Carlos Silvestre Frenk is a Mexican-British cosmologist and the Ogden Professor of Fundamental Physics at Durham University. His main interests lie in the fields of cosmology, galaxy formation and computer simulations of cosmic structure formation.
Peter Coles is a theoretical cosmologist at Maynooth University. He studies the large scale structure of our Universe.
Simon David Manton White, FRS, is a British astrophysicist. He was one of directors at the Max Planck Institute for Astrophysics before his retirement in late 2019.
The Virgo Consortium was founded in 1994 for Cosmological Supercomputer Simulations in response to the UK's High Performance Computing Initiative. Virgo developed rapidly into an international collaboration between a dozen scientists in the UK, Germany, Netherlands, Canada, United States and Japan.
The Department of Physics at Durham University in Durham, England, is a physics and astronomy department involved in both undergraduate and postgraduate teaching and scientific research.
Caleb Asa Scharf is a British-born astronomer and the director of the multidisciplinary Columbia Astrobiology Center at Columbia University, New York. He received a B.Sc. in Physics from Durham University and a PhD in Astronomy from the University of Cambridge; he did postdoctoral work in X-ray astronomy and observational cosmology at the NASA Goddard Space Flight Center and the Space Telescope Science Institute in Maryland.
George Petros Efstathiou is a British astrophysicist who is Professor of Astrophysics (1909) at the University of Cambridge and was the first Director of the Kavli Institute for Cosmology at the University of Cambridge from 2008 to 2016. He was previously Savilian Professor of Astronomy at the University of Oxford.
The George Darwin Lectureship is an award granted by the Royal Astronomical Society to a 'distinguished and eloquent speaker' on the subject of Astronomy including astrochemistry, astrobiology and astroparticle physics. The award is named after the astronomer George Darwin and has been given annually since 1984. The speaker may be based in the UK or overseas.
Uroš Seljak is a Slovenian cosmologist and a professor of astronomy and physics at University of California, Berkeley. He is particularly well-known for his research in cosmology and approximate Bayesian statistical methods.
The Bolshoi simulation, a computer model of the universe run in 2010 on the Pleiades supercomputer at the NASA Ames Research Center, was the most accurate cosmological simulation to that date of the evolution of the large-scale structure of the universe. The Bolshoi simulation used the now-standard ΛCDM (Lambda-CDM) model of the universe and the WMAP five-year and seven-year cosmological parameters from NASA's Wilkinson Microwave Anisotropy Probe team. "The principal purpose of the Bolshoi simulation is to compute and model the evolution of dark matter halos, thereby rendering the invisible visible for astronomers to study, and to predict visible structure that astronomers can seek to observe." “Bolshoi” is a Russian word meaning “big.”
The University of California High-Performance AstroComputing Center (UC-HiPACC), based at the University of California at Santa Cruz (UCSC), is a consortium of nine University of California campuses and three Department of Energy laboratories. The consortium's goal is to support and facilitate original research and education in computational astrophysics, and to engage in public outreach and education.
The Illustris project was a series of astrophysical simulations run by an international collaboration of scientists. The aim was to study the processes of galaxy formation and evolution in the universe with a comprehensive physical model. Early results were described in a number of publications following widespread press coverage. The project publicly released all data produced by the simulations in April, 2015. A follow-up to the project, IllustrisTNG, was presented in 2017.
Licia Verde is an Italian cosmologist and theoretical physicist and currently ICREA Professor of Physics and Astronomy at the University of Barcelona. Her research interests include large-scale structure, dark matter, dark energy, inflation and the cosmic microwave background.
The UniverseMachine is a project carrying out astrophysical supercomputer simulations of various models of possible universes, created by astronomer Peter Behroozi and his research team at the Steward Observatory and the University of Arizona. Numerous universes with different physical characteristics may be simulated in order to develop insights into the possible beginning and evolution of our universe. A major objective is to better understand the role of dark matter in the development of the universe. According to Behroozi, "On the computer, we can create many different universes and compare them to the actual one, and that lets us infer which rules lead to the one we see."
Daniel Pomarède is a staff scientist at the Institute of Research into the Fundamental Laws of the Universe, CEA Paris-Saclay University. He co-discovered Laniakea, a home supercluster of galaxies. Specialized in data visualization and cosmography, a branch of cosmology dedicated to mapping the Universe, he also co-authored the discoveries of the Dipole Repeller and of the Cold Spot Repeller, two large influential cosmic voids, and the discovery of the South Pole Wall, a large-scale structure located in the direction of the south celestial pole beyond the southern frontiers of Laniakea.
