scholarly journals An intuitive two-fluid picture of spontaneous 2D collisionless magnetic reconnection and whistler wave generation

2018 ◽  
Vol 25 (5) ◽  
pp. 055704 ◽  
Author(s):  
Young Dae Yoon ◽  
Paul M. Bellan
Keyword(s):  
Magnetic Reconnection ◽  
Wave Generation ◽  
Whistler Wave ◽  
Two Fluid

scholarly journals Whistler Wave Generation by Anisotropic Tail Electrons During Asymmetric Magnetic Reconnection in Space and Laboratory

2018 ◽  
Vol 45 (16) ◽  
pp. 8054-8061 ◽  
Author(s):  
Jongsoo Yoo ◽  
J. Jara‐Almonte ◽  
Evan Yerger ◽  
Shan Wang ◽  
Tony Qian ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Wave Generation ◽  
Whistler Wave

scholarly journals Whistler wave generation by electron temperature anisotropy during magnetic reconnection at the magnetopause

2019 ◽  
Vol 26 (5) ◽  
pp. 052902 ◽  
Author(s):  
Jongsoo Yoo ◽  
Shan Wang ◽  
Evan Yerger ◽  
J. Jara-Almonte ◽  
Hantao Ji ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Magnetic Reconnection ◽  
Wave Generation ◽  
Whistler Wave ◽  
Temperature Anisotropy

scholarly journals The two-fluid dynamics and energetics of the asymmetric magnetic reconnection in laboratory and space plasmas

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
M. Yamada ◽  
L.-J. Chen ◽  
J. Yoo ◽  
S. Wang ◽  
W. Fox ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Magnetic Reconnection ◽  
Space Plasmas ◽  
Two Fluid

The scaling of reconnection rate in the two-fluid model of a collisionless forced magnetic reconnection

2013 ◽  
Vol 79 (5) ◽  
pp. 519-524 ◽  
Author(s):  
M. HOSSEINPOUR
Keyword(s):  
Magnetic Field ◽  
Magnetic Reconnection ◽  
Fluid Model ◽  
Skin Depth ◽  
Main Stage ◽  
Field Reversal ◽  
Two Fluid Model ◽  
Hall Reconnection ◽  
Forced Magnetic Reconnection ◽  
Two Fluid

AbstractThe two-fluid model of collisionless forced magnetic reconnection is considered where breaking the frozen-in flow constraint for magnetic field lines is provided by electron inertia. Following the Taylor problem, a tearing stable slab of plasma with a magnetic field reversal is subjected to a small-amplitude boundary perturbation that drives magnetic reconnection at the neutral surface within the plasma. It has been shown that unlike the resistive regime, where the two-fluid magnetohydrodynamics (MHD) description reduces to the single-fluid MHD regime at sufficiently small values of the ion inertial skin-depth, di ≡ c/ωpi (with ωpi as the ion plasma frequency), there is no room for the single-fluid MHD reconnection in the collisionless case, even at very small values of di. Meanwhile, contradictory to the resistive reconnection, the rate of collisionless Hall reconnection always decreases with time as reconnection proceeds. In particular, in the main stage of Hall reconnection, when transition between two main equilibria states are taking place, it scales as t−1/2.

ELECTRON PARALLEL COMPRESSIBILITY IN THE NONLINEAR DEVELOPMENT OF TWO-DIMENSIONAL COLLISIONLESS MAGNETOHYDRODYNAMIC RECONNECTION

2006 ◽  
Vol 20 (16) ◽  
pp. 931-961 ◽  
Author(s):  
DANIELE DEL SARTO ◽  
F. CALIFANO ◽  
F. PEGORARO
Keyword(s):  
Magnetic Reconnection ◽  
Fluid Model ◽  
Density Fluctuations ◽  
Larmor Radius ◽  
Small Scale ◽  
Two Dimensional ◽  
Guide Field ◽  
Fluid Instabilities ◽  
Two Fluid Model ◽  
Two Fluid

Some topological aspects of the magnetic reconnection phenomenon are summarized and recent numerical results, derived within a two-fluid model, of two-dimensional collisionless magnetic reconnection in presence of a strong guide field are reported. Both the Alfvèn and the whistler frequency range are investigated by including electron parallel compressibility effects that are related respectively to thermal effects and to density fluctuations. The Hamiltonian character of the system is emphasized as it drives the small scale dynamics through the presence of topological invariants. These determine the formation and the shape of small scale current and vorticity layers inside the magnetic island. Secondary fluid instabilities, mainly of the Kelvin–Helmholtz type, can destabilize these layers when a hydrodynamic type regime is achieved. The inclusion of parallel electron compressibility has stabilizing effects. In view of the limitations of the two-fluid modelling, possible developments are briefly discussed such as the inclusion of Larmor-radius corrections, in lieu of a fully kinetic approach.

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