Applications from Astrophysics
Here we present a choice of impressive projects from astrophysics which have been carried out on GCS supercomputers.
The Illustris Simulation:
Revealing the Complexity of Galaxy Formation
An international team of scientists at the Heidelberg Institute for Theoretical Studies (HITS), MIT, Harvard University and the University of Cambridge has carried out the “Illustris Simulation” on the SuperMUC and CURIE supercomputers, and created the largest and most sophisticated computational model of cosmic structure formation thus far.
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Revealing the Complexity of Galaxy Formation …
Magneticum: Simulating Large Scale Structure Formation in the Universe
In project Magneticum, scientists perform simulations of which the most computational intensive one covers a cosmic volume of 1 Gpc3. This allows the researchers, for the very first time, to self consistently study galaxy clusters and groups, galaxies, and active galaxy nuclei (AGNs) within an enormously large volume of the Universe.
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What Heats the Beautiful One Million Degree Hot Solar Corona?
Scientists at the Max Planck Institute for Solar System Research in Göttingen employed a three-dimensional numerical model on GCS supercomputer Hermit of HLRS Stuttgart to investigate the heating process of the highly structured and dynamic corona.
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Simulations of Global Accretion Discs: Turbulent Transport and Dynamo Action
Accretion discs can power some of the most energetic phenomena in the universe and understanding how they work is very important for the comprehension of different astrophysical problems like how stars are formed or what happens in the central cores of galaxies.
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LocalUniverse - Our Neighbourhood in the Universe
Scientists used GCS supercomputing resources to perform a series of state-of-the-art constrained simulations of the first galaxies and their radiative effects in our Local Universe, among the largest and most detailed of their kind, following tens of billions of particles, while also modelling the complex physics involved in this process.
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How to Fit the Local Universe into a Supercomputer?
Scientists improved and combined methods to simulate the formation of the actual distribution of galaxies and galaxy clusters which allowed them to simulate the density distribution in the local universe up to distances of 670 million light-years.
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World's Largest Simulation of Supersonic, Compressible Turbulence
To advance the so far limited knowledge of density probability distribution function and the power spectrum of compressible, supersonic turbulence, a team of astrophysicists compared hydrodynamic models with numerical resolutions of 2563–40963 mesh points and with two distinct driving mechanisms, solenoidal (divergence-free) driving and compressive (curl-free) driving. By doing so, the scientists ran the world's largest simulation of supersonic turbulence on GCS supercomputers.
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Gas Induced Orbital Decay of Binary Systems
Using hydrodynamic simulations on GCS supercomputers, a team of scientists from the Max-Planck-Institute for Radio Astronomy, Bonn, and Jülich Supercomputing Centre investigates the influences of surrounding gas onto the period of binary systems.
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Three-dimensional Simulations of Supernova Explosions
Massive stars end their lives as core-collapse supernovae when the stellar core implodes to a neutron star and the stellar envelope is expelled. Using computer models, we have simulated the mixing processes occurring during the explosion without assuming any symmetry.
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Star Formation in Extreme Conditions
Numerical simulations are a crucial tool to understand the physics of gas turbulence and star formation: there is no analytic theory. More than six decades of spatial scales need to be described, which is best done with "adaptive resolution" codes on supercomputers.
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