Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonaxisymmetric Poynting Jets   The relativistic plasma jets from a misaligned black hole-accretion disk
system will not be axially symmetric. Here we analyze nonaxisymmetric,
stationary, translation invariant jets in the force-free approximation where
the field energy dominates the particle energy. We derive a stream equation for
these configurations involving the flux function $\psi$ for the transverse
magnetic field, the linear velocity $v(\psi)$ of field lines along the jet, and
the longitudinal magnetic field $B_z(\psi)$. The equations can be completely
solved when $|v|=1$, and when $|v|<1$ the problem can be reduced to the pure
magnetic case $v=0$ by a "field line dependent boost". We also find a large
class of nonaxisymmetric solutions with arbitrary dependence on the
longitudinal retarded time. A subclass of these constitutes a novel type of jet
that has vanishing electromagnetic pressure $\tfrac{1}{2}(B^2-E^2)$ and
requires no external pressure for confinement. We prove that such
self-confinement is impossible when $B^2>E^2$. Finally, we write down specific
solutions approximating numerical results for the nonaxisymmetric jet produced
by a spinning black hole in an external, misaligned magnetic field.

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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg