Scaling of Magnetic Reconnection With a Limited X‐Line Extent

@article{Huang2020ScalingOM,
  title={Scaling of Magnetic Reconnection With a Limited X‐Line Extent},
  author={Kai Huang and Yi‐Hsin Liu and Quanming Lu and Michael Hesse},
  journal={Geophysical Research Letters},
  year={2020},
  volume={47}
}
Contrary to all the 2‐D models, where the reconnection x‐line extent is infinitely long, we study magnetic reconnection in the opposite limit. An internal x‐line asymmetry along the current direction develops because of the transport of reconnected magnetic flux by electrons beneath the ion kinetic scale, resulting in a suppression region identified in Liu et al. (2019, https://doi.org/10.1029/2019JA026539). In this letter, we incorporate the length scale of this suppression region ≃10di to… 
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References

SHOWING 1-10 OF 67 REFERENCES

Three‐Dimensional Magnetic Reconnection With a Spatially Confined X‐Line Extent: Implications for Dipolarizing Flux Bundles and the Dawn‐Dusk Asymmetry

Using 3‐D particle‐in‐cell simulations, we study magnetic reconnection with the X‐line being spatially confined in the current direction. We include thick current layers to prevent reconnection at

Three‐Dimensional X‐line Spreading in Asymmetric Magnetic Reconnection

Three‐dimensional X‐line spreading is important for the coupling between global dynamics and local kinetic physics of magnetic reconnection. Using large‐scale 3‐D particle‐in‐cell simulations, we

Orientation and Stability of Asymmetric Magnetic Reconnection X Line

TLDR
This numerical experiment suggests that reconnection tends to radiate secondary oblique tearing modes if it is externally (globally) forced to proceed along an orientation not favored by the local physics.

A magnetic reconnection X-line extending more than 390 Earth radii in the solar wind

TLDR
Three-spacecraft observations of accelerated flow associated with reconnection in a current sheet embedded in the solar wind flow imply that reconnection is fundamentally a large-scale process and reveal, surprisingly, that reconnections can operate in a quasi-steady-state manner even when undriven by the external flow.

Hall magnetohydrodynamic effects for three‐dimensional magnetic reconnection with finite width along the direction of the current

[1] We performed three-dimensional Hall magnetohydrodynamic (MHD) simulations of magnetic reconnection with finite width along the direction perpendicular to the antiparallel magnetic field (i.e.,

Why does Steady-State Magnetic Reconnection have a Maximum Local Rate of Order 0.1?

TLDR
Simulations suggest collisionless steady-state magnetic reconnection of Harris-type current sheets proceeds with a rate of order 0.1, independent of dissipation mechanism, and predicted reconnection rates are close to the predicted maximum, suggesting reconnection proceeds near the most efficient state allowed at the MHD scale.

MMS Observation of Asymmetric Reconnection Supported by 3‐D Electron Pressure Divergence

We identify the electron diffusion region (EDR) of a guide field dayside reconnection site encountered by the Magnetospheric Multiscale (MMS) mission and estimate the terms in generalized Ohm's law

Turbulence‐Driven Magnetic Reconnection in the Magnetosheath Downstream of a Quasi‐Parallel Shock: A Three‐Dimensional Global Hybrid Simulation

Satellite observations with high‐resolution measurements have demonstrated the existence of intermittent current sheets and occurrence of magnetic reconnection in a quasi‐parallel magnetosheath

Three‐dimensional structure of magnetic reconnection in the magnetotail from Geotail observations

Three‐dimensional structure of magnetic reconnection in the near‐Earth magnetotail is explored using Geotail observations from 1996 to 2012. Magnetic reconnection is identified as a simultaneous

Suppression of collisionless magnetic reconnection in asymmetric current sheets

Using fully kinetic simulations, we study the suppression of asymmetric reconnection in the limit where the diamagnetic drift speed ≫ Alfven speed and the magnetic shear angle is moderate. We
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