Multidimensional MHD Simulations Of DSA Using AstroBEAR

Details Multidimensional MHD Simulations Of DSA Using AstroBEAR Multidimensional MHD Simulations Of DSA Using AstroBEAR

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21440403e&link_type=abstract

American Astronomical Society, AAS Meeting #214, #404.03; Bulletin of the American Astronomical Society, Vol. 41, p.667

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We present a modification to the AstroBEAR (Astronomical Boundary Embedded Adaptive Refinement) MHD code (Cunningham et. al. 2007) that allows it to treat time dependent Diffusive Shock Acceleration (DSA) of cosmic rays in multiple dimensions including dynamical feedback from the cosmic rays. Utilizing the power of Adaptive Mesh Refinement (AMR) in tandem with efficient methods for cosmic ray diffusion and advection, this allows us for the first time to explore the evolution of modified MHD shocks in more than one spatial dimension. Among the early applications of the code will be investigations of colliding and clumpy stellar winds, type II supernova remnants and cosmic ray driven instabilities. This work is supported at the University of Minnesota by NSF, NASA and the Minnesota Supercomputing Institute.

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