Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bianchi VI0 viscous fluid cosmology with magnetic field   A spatially homogeneous Bianchi type VI0 model containing a viscous fluid in
the presence of an axial magnetic field has been studied. A barotropic equation
of state together with a pair of linear relations among the square root of
matter density, shear scalar, and expansion scalar have been assumed. Solutions
are obtained in the presence of a magnetic field, only in two special cases,
which are comparatively simpler. The complete solutions for this model in the
absence of a magnetic field are also obtained. The presence of a magnetic field
in the former case however, does not in effect cause any major modification in
the fundamental nature of the initial singularity of the expanding model.

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The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
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The categories of this paper are: eess
29
The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: adap-org
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The categories of this paper are: cs
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The categories of this paper are: stat
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: hep-ex