Resistive evolution of toroidal field distributions and their relation to magnetic clouds

  title={Resistive evolution of toroidal field distributions and their relation to magnetic clouds},
  author={C B Smiet and Hugo J. de Blank and Tobias A. de Jong and D. N. L. Kok and Dirk Bouwmeester},
  journal={Journal of Plasma Physics},
We study the resistive evolution of a localized self-organizing magnetohydrodynamic equilibrium. In this configuration the magnetic forces are balanced by a pressure force caused by a toroidal depression in the pressure. Equilibrium is attained when this low-pressure region prevents further expansion into the higher-pressure external plasma. We find that, for the parameters investigated, the resistive evolution of the structures follows a universal pattern when rescaled to resistive time. The… 
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Scientific usage of the Pencil Code Search results using and Bumblebee

  • Computer Science
  • 2019
In the following the authors present the papers that are making use of the Pencil Code either for their own scientific work of those authors, or for code comparison purposes, although the topics are often overlapping.



Ideal relaxation of the Hopf fibration

Ideal magnetohydrodynamics relaxation is the topology-conserving reconfiguration of a magnetic field into a lower energy state where the net force is zero. This is achieved by modeling the plasma as

Self-Organizing Knotted Magnetic Structures in Plasma.

Analytical expressions are obtained that approximate the global structure of the quasistable linked and knotted plasma configurations that emerge, using maps from S^{3} to S^{2} of which the Hopf fibration is a special case.

Magnetohydrodynamic relaxation of AGN ejecta: radio bubbles in the intracluster medium

X-ray images of galaxy clusters often display underdense bubbles which are apparently inflated by active galactic nucleus (AGN) outflow. I consider the evolution of the magnetic field inside such a

On the spontaneous magnetic field in a conducting liquid in turbulent motion

  • G. Batchelor
  • Physics
    Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
  • 1950
Several recent investigations in geophysics and astrophysics have involved a consideration of the hydrodynamics of a fluid which is a good electrical conductor. In this paper one of the problems

Interplanetary magnetic clouds, helicity conservation, and current‐core flux‐ropes

A current-core flux-rope model for interplanetary magnetic clouds is presented which explains their average thermodynamic and magnetic properties. It is assumed that during a magnetic cloud's

Relaxation and magnetic reconnection in plasmas

The theory of plasma relaxation is described and developed. Turbulence, allied with a small resistivity, allows the plasma rapid access to a particular minimum-energy state. This process involves

The first in situ observation of torsional Alfvén waves during the interaction of large-scale magnetic clouds

The large-scale magnetic cloud such as coronal mass ejections (CMEs) is the fundamental driver of the space weather. The interaction of the multiple CMEs in interplanetary space affects their dynamic

Simulations of nonhelical hydromagnetic turbulence.

The bottleneck effect is shown to be equally strong both for magnetic and nonmagnetic turbulence, but it is far weaker in one-dimensional spectra that are normally studied in laboratory turbulence.


  • S. Chandrasekhar
  • Physics
    Proceedings of the National Academy of Sciences of the United States of America
  • 1956
The possibllity that cosmic magnetic fields, which occur in regions of low density, may be force-free is considered and the condition for maximum magnetic energy for a given mean-square current density, the case of an isolated spherical plasma, and the state of minimunn dissipation for agiven magnetic energy are discussed.

Rapid planetesimal formation in turbulent circumstellar disks

It is reported that boulders can undergo efficient gravitational collapse in locally overdense regions in the midplane of the disk, and it is found that gravitationally bound clusters form with masses comparable to dwarf planets and containing a distribution of boulder sizes.