Effect of inflow density on ion diffusion region of magnetic reconnection: Particle-in-cell simulations

2011 ◽  
Vol 18 (11) ◽  
pp. 111204 ◽  
Author(s):  
P. Wu ◽  
M. A. Shay ◽  
T. D. Phan ◽  
M. Oieroset ◽  
M. Oka
Keyword(s):  
Magnetic Reconnection ◽  
Diffusion Region ◽  
Ion Diffusion ◽  
Particle In Cell

scholarly journals The heavy ion diffusion region in magnetic reconnection in the Earth's magnetotail

2015 ◽  
Vol 120 (5) ◽  
pp. 3535-3551 ◽  
Author(s):  
Y. H. Liu ◽  
C. G. Mouikis ◽  
L. M. Kistler ◽  
S. Wang ◽  
V. Roytershteyn ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Heavy Ion ◽  
Diffusion Region ◽  
Ion Diffusion

scholarly journals Electron pitch angle distribution during magnetic reconnection diffusion region observations in the Earth's magnetotail

2012 ◽  
Vol 30 (1) ◽  
pp. 109-117 ◽  
Author(s):  
A. L. Borg ◽  
M. G. G. T. Taylor ◽  
J. P. Eastwood
Keyword(s):  
Magnetic Reconnection ◽  
Electron Flux ◽  
Diffusion Region ◽  
Angle Distribution ◽  
Ion Diffusion ◽  
Electron Field ◽  
Outflow Region ◽  
The Magnetic Field ◽  
Case Basis ◽  
Magnetotail Current Sheet

Abstract. The Earth's magnetosphere provides an excellent laboratory for magnetic reconnection research. In particular, the magnetotail current sheet that is formed between the interface of the similar Northern and Southern Hemispheres of the magnetotail provides a relatively stable symmetric reconnection configuration that can be used to study basic aspects of the reconnection process. Of particular importance is the manner in which electrons are processed by the reconnection. Simulations and satellite data analyses of the ion diffusion region have suggested that the fluxes of electrons in the inflow regions of reconnection are greater in the directions parallel and anti-parallel to the magnetic field (field-aligned) whereas the electron flux in the outflow region is distributed more isotropically. However, this has only been studied experimentally on a case-by-case basis. In this paper, we investigate this claim by analyzing the degree of bulk electron field alignment in the outflow and inflow regions during encounters of the magnetic reconnection ion diffusion region by the Cluster spacecraft in the years 2001–2006. We demonstrate that while the median electron flux in the inflow region is indeed more field aligned than in the outflow region during some ion diffusion region encounters, the variation of the signature across events is so large that it cannot be said to be a general feature of magnetic reconnection in the Earth's magnetotail.

scholarly journals Coalescence of magnetic flux ropes in the ion diffusion region of magnetic reconnection

2015 ◽  
Vol 12 (3) ◽  
pp. 263-267 ◽  
Author(s):  
Rongsheng Wang ◽  
Quanming Lu ◽  
Rumi Nakamura ◽  
Can Huang ◽  
Aimin Du ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Magnetic Reconnection ◽  
Diffusion Region ◽  
Ion Diffusion ◽  
Magnetic Flux Ropes ◽  
Flux Ropes

The evolution of the ion diffusion region during collisionless magnetic reconnection in a force-free current sheet

2015 ◽  
Vol 22 (9) ◽  
pp. 092110 ◽  
Author(s):  
Fushun Zhou ◽  
Can Huang ◽  
Quanming Lu ◽  
Jinlin Xie ◽  
Shui Wang
Keyword(s):  
Magnetic Reconnection ◽  
Current Sheet ◽  
Diffusion Region ◽  
Ion Diffusion ◽  
Free Current

scholarly journals PIC methods in astrophysics: simulations of relativistic jets and kinetic physics in astrophysical systems

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Kenichi Nishikawa ◽  
Ioana Duţan ◽  
Christoph Köhn ◽  
Yosuke Mizuno
Keyword(s):  
Plasma Physics ◽  
Magnetic Reconnection ◽  
Laser Plasma ◽  
High Performance ◽  
Relativistic Jets ◽  
Astrophysical Plasmas ◽  
Computing Power ◽  
Particle In Cell ◽  
The Future ◽  
Pic Method

AbstractThe Particle-In-Cell (PIC) method has been developed by Oscar Buneman, Charles Birdsall, Roger W. Hockney, and John Dawson in the 1950s and, with the advances of computing power, has been further developed for several fields such as astrophysical, magnetospheric as well as solar plasmas and recently also for atmospheric and laser-plasma physics. Currently more than 15 semi-public PIC codes are available which we discuss in this review. Its applications have grown extensively with increasing computing power available on high performance computing facilities around the world. These systems allow the study of various topics of astrophysical plasmas, such as magnetic reconnection, pulsars and black hole magnetosphere, non-relativistic and relativistic shocks, relativistic jets, and laser-plasma physics. We review a plethora of astrophysical phenomena such as relativistic jets, instabilities, magnetic reconnection, pulsars, as well as PIC simulations of laser-plasma physics (until 2021) emphasizing the physics involved in the simulations. Finally, we give an outlook of the future simulations of jets associated to neutron stars, black holes and their merging and discuss the future of PIC simulations in the light of petascale and exascale computing.

scholarly journals Identification of the Electron-Diffusion Region during Magnetic Reconnection in a Laboratory Plasma

2008 ◽  
Vol 101 (8) ◽  
Author(s):  
Yang Ren ◽  
Masaaki Yamada ◽  
Hantao Ji ◽  
Stefan P. Gerhardt ◽  
Russell Kulsrud
Keyword(s):  
Magnetic Reconnection ◽  
Diffusion Region ◽  
Laboratory Plasma ◽  
Electron Diffusion

scholarly journals Brief Communication: The double layer in the separatrix region during magnetic reconnection

2015 ◽  
Vol 22 (2) ◽  
pp. 167-171
Author(s):  
J. Guo ◽  
B. Yu
Keyword(s):  
Electron Beam ◽  
Magnetic Reconnection ◽  
Double Layer ◽  
Particle In Cell ◽  
Acoustic Instability ◽  
Ion Acoustic ◽  
Evolution Stage ◽  
Spatial Size ◽  
Electron Holes ◽  
Observation Results

Abstract. With two-dimensional (2-D) particle-in-cell (PIC) simulations we investigate the evolution of the double layer (DL) driven by magnetic reconnection. Our results show that an electron beam can be generated in the separatrix region as magnetic reconnection proceeds. This electron beam could trigger the ion-acoustic instability; as a result, a DL accompanied with electron holes (EHs) can be found during the nonlinear evolution stage of this instability. The spatial size of the DL is about 10 Debye lengths. This DL propagates along the magnetic field at a velocity of about the ion-acoustic speed, which is consistent with the observation results.

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