Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How Anomalous Resistivity Accelerates Magnetic Reconnection   Whether turbulence induced anomalous resistivity (AR) can facilitate a fast
magnetic reconnection in collisionless plasma is a subject of active debate for
decades. Recent space observations suggest that the reconnection rate can be
higher than the Hall-reconnection rate and turbulent dissipation is required.
In this paper, using particle-in-cell simulations, we present a case study of
how AR produced by Buneman instability accelerates magnetic reconnection. We
first show that the AR/drag produced by Buneman instability in a thin electron
current layer 1) can dissipate magnetic energy stored in the current layer
through dissipation of the kinetic energy of electron beams; 2) The
inhomogeneous drag caused by wave couplings spontaneously breaks the magnetic
field lines and causes impulsive fast non-Hall magnetic reconnection on
electron-scales with a mean rate reaching 0.6 $V_A$. We then show that a
Buneman instability driven by intense electron beams around the x-point in a 3D
magnetic reconnection significantly enhances the dissipation of the magnetic
energy. Electron-scale magnetic reconnections driven by the inhomogeneous drag
around the x-line enhances the reconnection electric field and the in-plane
perpendicular magnetic field. About 40\% of the released magnetic energy is
converted into the electron thermal energy by AR while 50\% is converted into
the kinetic energy of the electron beams through the acceleration by the
reconnection electric field. The enhanced magnetic energy dissipation is
balanced by a net Poynting flux in-flow. About 10\% of the released magnetic
energy is brought out by an enhanced Poynting flux out-flow. These results
suggest that AR with sufficient intensity and electron-scale inhomogeneity can
significantly accelerate magnetic reconnection.

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The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int