Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 2D Relativistic MHD Simulations of the Kruskal-Schwarzschild Instability
  in a Relativistic Striped Wind   We study the linear and non-linear development of the Kruskal-Schwarzchild
Instability in a relativisitically expanding striped wind. This instability is
the generalization of Rayleigh-Taylor instability in the presence of a magnetic
field. It has been suggested to produce a self-sustained acceleration mechanism
in strongly magnetized outflows found in active galactic nuclei, gamma-ray
bursts, and micro-quasars. The instability leads to magnetic reconnection, but
in contrast with steady-state Sweet-Parker reconnection, the dissipation rate
is not limited by the current layer's small aspect ratio. We performed
two-dimensional (2D) relativistic magneto-hydrodynamic (RMHD) simulations
featuring two cold and highly magnetized ($1\leq\sigma\leq10^{3}$) plasma
layers with an anti-parallel magnetic field separated by a thin layer of
relativistically hot plasma with a local effective gravity induced by the
outflow's acceleration. Our simulations show how the heavier relativistically
hot plasma in the reconnecting layer drips out and allows oppositely oriented
magnetic field lines to reconnect. The instability's growth rate in the linear
regime matches the predictions of linear stability analysis. We find turbulence
rather than an ordered bulk flow near the reconnection region, with turbulent
velocities up to $\sim0.1$c, largely independent of model parameters. However,
the magnetic energy dissipation rate is found to be much slower, corresponding
to an effective ordered bulk velocity inflow into the reconnection region
$v_{\rm in}=\beta_{\rm in}c$, of $10^{-3}\lesssim\beta_{\rm in}\lesssim
5\times10^{-3}$. This occurs due to the slow evacuation of hot plasma from the
current layer, largely because of the Kelvin-Helmholtz instability experienced
by the dripping plasma. 3D RMHD simulations are needed to further investigate
the non-linear regime.

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The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc