Illustris - eine Simulation des UniversumsEin 106.5-Megaparsec-Modell des Universums zur Simulation der kosmischen Evolution der letzten 13,8 Milliarden Jahre
VIDEO-LINKLINKInterview mit Mark Vogelsberger über
IllustrisAUDIO-LINKProperties of galaxies reproduced by a hydrodynamic simulation M. Vogelsberger, S. Genel, V. Springel, P. Torrey, D. Sijacki,
D. Xu, G. Snyder, S. Bird, D. Nelson & L. Hernquist
Nature 509, 177–182 (08 May 2014)
doi:10.1038/nature13316
LINKPrevious simulations of the growth of cosmic structures have broadly reproduced the ‘cosmic web’ of galaxies that we see in the Universe, but failed to create a mixed population of elliptical and spiral galaxies, because of numerical inaccuracies and incomplete physical models. Moreover, they were unable to track the small-scale evolution of gas and stars to the present epoch within a representative portion of the Universe. Here we report a simulation that starts 12 million years after the Big Bang, and traces 13 billion years of cosmic evolution with 12 billion resolution elements in a cube of 106.5 megaparsecs a side. It yields a reasonable population of ellipticals and spirals, reproduces the observed distribution of galaxies in clusters and characteristics of hydrogen on large scales, and at the same time matches the ‘metal’ and hydrogen content of galaxies on small scales.
Thema: Illustris - eine Simulation des Universums (Gelesen 2687 mal)
