2006/04/21 by Hui Li, Giovanni Lapenta, John M. Finn +2 · 96 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Gamma-ray bursts and supernovae #Limit (mathematics) #Physics #Scale (ratio) #Solar and Space Plasma Dynamics #astro-ph
paper · pdf · doi:10.1086/501499
published in The Astrophysical Journal 643(1), 92-100 (IOP Publishing) · Accepted to ApJ, May 10, 2006 issue, 12 figures total (3 color figures)
arxiv created 2006/04/21 · openalex publication_date 2006/05/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We suggest a new approach that could be used for modeling both the large-scale behavior of astrophysical jets and the magnetically dominated explosions in astrophysics. We describe a method for modeling the injection of magnetic fields and their subsequent evolution in a regime where the free energy is magnetically dominated. The injected magnetic fields, along with their associated currents, have both poloidal and toroidal components, and they are not force free. The dynamic expansion driven by the Lorentz force of the injected fields is studied using three-dimensional ideal magnetohydrodynamic simulations. The generic behavior of magnetic field expansion, the interactions with the background medium, and the dependence on various parameters are investigated.