Скачать или смотреть The FABLE Simulations: Formation of a Galaxy Cluster

The Feedback Acting on Baryons in Large-scale Environments (FABLE) simulations follow the formation and evolution of galaxies across a diverse range of environments; from the sparsely-populated field environment and small groups of just a handful of galaxies to rich galaxy clusters containing hundreds of member galaxies. Each simulation in the FABLE suite evolves a patch of a mock universe from shortly after the Big Bang to the present-day using the state-of-the-art numerical code AREPO, which incorporates a comprehensive set of models for the physical processes that drive galaxy formation. The simulations have been performed on DiRAC high-performance computing facilities and took several million CPU hours in total to complete. The FABLE model simultaneously produces realistic galaxies, groups and clusters and allows us to explore in detail the astrophysical processes at play on this vast range of scales.

This video shows the evolution of one of the most massive FABLE clusters over the past 13.8 billion years. Here we are viewing the evolution of the gas in a large region centred on the forming cluster in which the brightness and colour correspond to the density and temperature of the gas. The distance scale in the lower-left corresponds to one comoving megaparsec (over 3 million light years). At early times we see the formation of the basic structure of the `Cosmic Web' in the form of sheets and filaments and the voids in between them. The densest regions lie at the intersections of these filaments and collapse under gravity to form massive halos containing large amounts of dense, hot gas. These structures continue to grow by mergers with each other and by accretion of lower density gas from the surrounding regions. As the gas is compressed by gravity it is heated to very high temperatures, changing colour from blue to green to white. By the present-day these structures have coalesced into a massive galaxy cluster 17 million light-years in diameter, weighing a million billion times the mass of the Sun and hosting hundreds of member galaxies.

Publication:
"The FABLE simulations: a feedback model for galaxies, groups, and clusters", Henden N. A., Puchwein E., Shen S., Sijacki D., 2018, Monthly Notices of the Royal Astronomical Society, 479, 5385 (10 July 2018)

The FABLE project is run by scientists at the Kavli Institute for Cosmology at the University of Cambridge (https://www.kicc.cam.ac.uk/).