• Corpus ID: 244714593

Accurately Incorporating a Reduced-Speed-of-Light in Magnetohydrodynamic-Particle-in-Cell Simulations

@inproceedings{Ji2021AccuratelyIA,
  title={Accurately Incorporating a Reduced-Speed-of-Light in Magnetohydrodynamic-Particle-in-Cell Simulations},
  author={Suoqing Ji and Philip F. Hopkins},
  year={2021}
}
A reduced-speed-of-light (RSOL) approximation is usually adopted in magnetohydrodynamic (MHD)-particle-in-cell (PIC) simulations, in which relativistic cosmic ray (CR) particles moving at nearly the speed of light 2 and background (non-relativistic) plasma are evolved concurrently. With a RSOL, some “in-code” speed-of-light 2̃ is set to much lower values than the true 2, allowing simulations to take larger timesteps (which are restricted by the Courant condition given the large CR speeds… 
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