Computational Astrophysics reaches its Third Age: From Star Formation to the Death of the Sun.

Details Computational Astrophysics reaches its Third Age: From Star Formation to the Death of the Sun. Computational Astrophysics reaches its Third Age: From Star Formation to the Death of the Sun.

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20920203f&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #202.03; Bulletin of the American Astronomical Society,

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The use of simulations in astrophysics has progressed to the point where computational datasets can be as rich as those obtained from observations. In this sense the field has reached maturity or its “third age”. In this talk I will review progress in the use of simulations as a tool for astronomical research. The talk will include the basic elements of numerical simulations as well as advances in algorithms which have led to recent dramatic progress.
The scientific focus will be hydrodynamic and magneto-hydrodynamic simulations of star formation and the death of solar-type stars. We will explore the most recent models of collimated outflows (jets) from young stars and their interaction with natal environments. The source of these outflows are magnetized disks surrounding the stars. Models of this process have also reached new levels of realism. At the other end of a star’s lifetime we also find outflows to be ubiquitous phenomena. Here magnetic fields are again a principle actor creating collimated jets though in this case binary companions may be critical. In all cases the physics involved is too non-linear to investigate solely with analytic methods. Direct simulation must be used to fill out the story. Finally we introduce the field of High Energy Density Laboratory Astrophysics where fusion devices are used to create astrophysically relevant laboratory experiments. Simulations play a key role in the design and analysis of these studies as well.

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