swMATH ID: 18068
Software Authors: Kunz, Matthew W.; Stone, James M.; Bai, Xue-Ning
Description: Pegasus: a new hybrid-kinetic particle-in-cell code for astrophysical plasma dynamics. We describe Pegasus, a new hybrid-kinetic particle-in-cell code tailored for the study of astrophysical plasma dynamics. The code incorporates an energy-conserving particle integrator into a stable, second-order-accurate, three-stage predictor-predictor-corrector integration algorithm. The constrained transport method is used to enforce the divergence-free constraint on the magnetic field. A δf scheme is included to facilitate a reduced-noise study of systems in which only small departures from an initial distribution function are anticipated. The effects of rotation and shear are implemented through the shearing-sheet formalism with orbital advection. These algorithms are embedded within an architecture similar to that used in the popular astrophysical magnetohydrodynamics code Athena, one that is modular, well-documented, easy to use, and efficiently parallelized for use on thousands of processors. We present a series of tests in one, two, and three spatial dimensions that demonstrate the fidelity and versatility of the code.
Homepage: http://www.sciencedirect.com/science/article/pii/S0021999113007973
Keywords: hybrid; particle-in-cell; numerical methods; plasma
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Cited in: 9 Publications

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