Combining Eulerian and Lagrangian Schemes to Investigate Outflows from AGN and their Effect on Star-Forming Galaxies

Details Combining Eulerian and Lagrangian Schemes to Investigate Outflows from AGN and their Effect on Star-Forming Galaxies Combining Eulerian and Lagrangian Schemes to Investigate Outflows from AGN and their Effect on Star-Forming Galaxies

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21711602r&link_type=abstract

American Astronomical Society, AAS Meeting #217, #116.02; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Issues with simulating astrophysical phenomenon have arisen lately with the appropriateness of the two dominant methods: Adaptive Mesh Refinement (AMR), which is well suited for mixing of media, turbulent flow, shocks, and shear layers, and Smoothed Particle Hydrodynamics (SPH), which is less complex, and more easily able to cover length scales spanning several orders of magnitude. For problems including the dynamics of stellar interactions, galactic formation, galactic feedback, and cosmological evolution, both these capabilities are essential. To address these issues, we created a tool to convert SPH datasets from codes such as SNSPH and Hydra into initial conditions for the AMR code FLASH, allowing efficient simulation of the initial conditions on large scales, and further simulation of the small scale regions of interest. As a test case we modeled colliding white dwarfs as possible SNIa progenitors to illuminate different mechanisms of Ni56 production. Our approach was then applied to cosmological datasets to allow for large-scale cosmological simulations with sufficient resolution to model AGN feedback and its effect on gas accretion and star formation in z = 2 galaxies. We would like to thank the Natural Sciences and Engineering Research Council of Canada for their support of this research.

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