scholarly journals Highly structured electron anisotropy in collisionless reconnection exhausts

2014 ◽  
Vol 41 (15) ◽  
pp. 5389-5395 ◽  
Author(s):  
J. R. Shuster ◽  
L.-J. Chen ◽  
W. S. Daughton ◽  
L. C. Lee ◽  
K. H. Lee ◽  
...  
Keyword(s):  
Collisionless Reconnection

Magnetic blowout during collisionless reconnection

1992 ◽  
Vol 19 (11) ◽  
pp. 1077-1080 ◽  
Author(s):  
J. F. Drake ◽  
G. R. Burkhart
Keyword(s):  
Collisionless Reconnection

scholarly journals Correction to “Collisionless reconnection in a quasi-neutral sheet near marginal stability”

1991 ◽  
Vol 18 (2) ◽  
pp. 355-355
Author(s):  
P. L. Pritchett ◽  
F. V. Coroniti ◽  
R. Pellat ◽  
H. Karimabadi
Keyword(s):  
Marginal Stability ◽  
Neutral Sheet ◽  
Collisionless Reconnection

scholarly journals Nonlinear gyrofluid simulations of collisionless reconnection

2010 ◽  
Vol 17 (8) ◽  
pp. 082312 ◽  
Author(s):  
D. Grasso ◽  
E. Tassi ◽  
F. L. Waelbroeck
Keyword(s):  
Collisionless Reconnection

scholarly journals Onset of magnetic reconnection in a collisionless, high- plasma

2019 ◽  
Vol 85 (1) ◽  
Author(s):  
Andrew Alt ◽  
Matthew W. Kunz
Keyword(s):  
Magnetic Reconnection ◽  
Collisionless Plasma ◽  
High Plasma ◽  
Tearing Modes ◽  
Associated Production ◽  
Pressure Anisotropy ◽  
Low Threshold ◽  
Collisionless Reconnection ◽  
Field Lines ◽  
The Impact

In a magnetized, collisionless plasma, the magnetic moment of the constituent particles is an adiabatic invariant. An increase in the magnetic-field strength in such a plasma thus leads to an increase in the thermal pressure perpendicular to the field lines. Above a$\unicode[STIX]{x1D6FD}$-dependent threshold (where$\unicode[STIX]{x1D6FD}$is the ratio of thermal to magnetic pressure), this pressure anisotropy drives the mirror instability, producing strong distortions in the field lines on ion-Larmor scales. The impact of this instability on magnetic reconnection is investigated using a simple analytical model for the formation of a current sheet (CS) and the associated production of pressure anisotropy. The difficulty in maintaining an isotropic, Maxwellian particle distribution during the formation and subsequent thinning of a CS in a collisionless plasma, coupled with the low threshold for the mirror instability in a high-$\unicode[STIX]{x1D6FD}$plasma, imply that the geometry of reconnecting magnetic fields can differ radically from the standard Harris-sheet profile often used in simulations of collisionless reconnection. As a result, depending on the rate of CS formation and the initial CS thickness, tearing modes whose growth rates and wavenumbers are boosted by this difference may disrupt the mirror-infested CS before standard tearing modes can develop. A quantitative theory is developed to illustrate this process, which may find application in the tearing-mediated disruption of kinetic magnetorotational ‘channel’ modes.

scholarly journals Particle Acceleration in Collisionless Magnetic Reconnection

2001 ◽  
Vol 203 ◽  
pp. 555-557
Author(s):  
P. K. Browning ◽  
G. E. Vekstein
Keyword(s):  
Magnetic Field ◽  
Field Component ◽  
Charged Particles ◽  
Energy Spectra ◽  
Uniform Field ◽  
Two Dimensional ◽  
Point Field ◽  
Field Geometry ◽  
Collisionless Reconnection ◽  
Accelerated Particles

We investigate the acceleration of charged particles in the framework of collisionless reconnection. A steady reconnection scenario is considered, with a two dimensional X-point magnetic field geometry having also a uniform field component transverse to the plane of the X-point field, and an inductive electric field generating an inflow of particles. Test particle trajectories are studied, and the energy spectra of the accelerated particles are determined.

On the relationship between quadrupolar magnetic field and collisionless reconnection

2014 ◽  
Vol 21 (6) ◽  
pp. 062111 ◽  
Author(s):  
R. Smets ◽  
N. Aunai ◽  
G. Belmont ◽  
C. Boniface ◽  
J. Fuchs
Keyword(s):  
Magnetic Field ◽  
Collisionless Reconnection ◽  
The Relationship

Ion Larmor radius effects in collisionless reconnection

2000 ◽  
Vol 26 (6) ◽  
pp. 512-518 ◽  
Author(s):  
D. Grasso ◽  
F. Califano ◽  
F. Pegoraro ◽  
F. Porcelli
Keyword(s):  
Larmor Radius ◽  
Collisionless Reconnection

Collisionless reconnection and the sawtooth crash

1991 ◽  
Vol 66 (11) ◽  
pp. 1458-1461 ◽  
Author(s):  
J. F. Drake ◽  
R. G. Kleva
Keyword(s):  
Collisionless Reconnection
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