Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic Field Generation and Particle Energization at Relativistic
  Shear Boundaries in Collisionless Electron-Positron Plasmas   Using 2.5-dimensional Particle-in-Cell simulations, we study the kinetic
physics of relativistic shear flow boundary in collisionless electron-positron
(e+e-) plasmas. We find efficient magnetic field generation and particle
energization at the shear boundary, driven by streaming instabilities across
the shear interface and sustained by the shear flow. Nonthermal, anisotropic
high-energy particles are accelerated across field lines to produce a power-law
tail, truncated at energies below the shear Lorentz factor. These results have
important implications for the dissipation and radiation of jets in blazars,
gamma-ray bursts and other relativistic outflows.

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The categories of this paper are: math
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
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The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
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The categories of this paper are: stat
34
The categories of this paper are: chem-ph
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The categories of this paper are: physics
27
The categories of this paper are: comp-gas