@article{70,
  author = {Matthew Kunz and James Stone and Xue-Ning Bai},
  title = {Pegasus: A new hybrid-kinetic particle-in-cell code for astrophysical plasma dynamics},
  abstract = { <p>We describe <em>Pegasus</em>, 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{\textendash}accurate, three-stage predictor{\textendash}predictor{\textendash}corrector integration algorithm. The constrained transport method is used to enforce the divergence-free constraint on the magnetic field. A <em>δf</em> 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 <em>Athena</em>, 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.</p>
 },
  year = {2014},
  journal = {J. Computational Physics},
  volume = {259},
  chapter = {154},
  url = {https://doi.org/10.1016/j.jcp.2013.11.035},
  language = {eng},
}