Related Experiment Video
Updated: Jun 6, 2025

06:42
Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
9.5K
The Interplay Between Collisionless Magnetic Reconnection and Turbulence.
J E Stawarz1, P A Muñoz2,3, N Bessho4,5
1Department of Mathematics, Physics, and Electrical Engineering, Northumbria University, Ellison Building, Newcastle upon Tyne, NE1 8ST UK.
Summary
Turbulence and magnetic reconnection are key plasma processes. Recent observations reveal complex interactions, driving new insights into energy transport in space plasmas.
Area of Science:
- Plasma physics
- Space physics
- Astrophysical plasmas
Background:
- Turbulence and magnetic reconnection are fundamental nonlinear plasma phenomena.
- These processes are crucial for energy transport and conversion in space and astrophysical plasmas.
- High-resolution, multi-spacecraft observations have advanced the understanding of their interplay.
Purpose of the Study:
- To review the current knowledge on the interplay between turbulence and magnetic reconnection in collisionless plasmas.
- To explore different facets of this interaction: turbulence-driven reconnection, reconnection-driven turbulence, and stochastic reconnection.
- To focus on key regions in Earth's magnetosphere using data from NASA's Magnetospheric Multiscale mission.
Main Methods:
- Theoretical analysis
- Numerical simulations
- Observational data analysis (Magnetospheric Multiscale mission)
Main Results:
- The interplay is multifaceted, involving turbulence generating current sheets for reconnection.
- Reconnection can drive turbulence, or act as an intermediate step in turbulence excitation.
- Stochastic reconnection is enabled by magnetic field lines in turbulent fluctuations.
Conclusions:
- The study provides a comprehensive review of turbulence-reconnection interplay from multiple perspectives.
- Key regions like Earth's magnetosheath, magnetotail, and Kelvin-Helmholtz vortices are highlighted.
- New insights into these complex plasma dynamics are being provided by advanced missions.
Related Concept Videos
Magnetostatic Boundary Conditions
877
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
877
Divergence and Curl of Magnetic Field
2.8K
The magnetic field due to a volume current distribution given by the Biot–Savart Law can be expressed as follows:
2.8K
Potential Due to a Magnetized Object
262
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
The vector...
262
Turbulent Flow
145
Turbulent flow is characterized by unpredictable fluctuations in velocity and pressure, which result in a chaotic fluid movement distinct from the orderly patterns of laminar flow. While laminar flow is governed by smooth, parallel layers with minimal mixing, turbulent flow exhibits highly irregular, three-dimensional patterns. This behavior arises due to instabilities in the fluid's velocity profile, and amplifies as the flow velocity increases. Minor disturbances, known as turbulent...
145
Atomic Nuclei: Nuclear Relaxation Processes
629
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis, the precessing magnetic moments are randomly oriented around the z-axis.
629
Magnetic Force Between Two Parallel Currents
3.5K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and the vector product of the length vector along the current element and the field due to the first conductor. According to the...
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and the vector product of the length vector along the current element and the field due to the first conductor. According to the...
3.5K

