Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Rapidly Rotating Magnetic Core-Collapse Supernovae   We have analyzed the magnetic effects that may occur in rapidly rotating core
collapse supernovae. We consider effects from both magnetic turbulence and the
formation of magnetic bubbles. For magnetic turbulence we have made a
perturbative analysis for our spherically symmetric core-collapse supernova
model that incorporates the build up of magnetic field energy in the matter
accreting onto the proto-neutron star shortly after collapse and bounce. This
significantly modifies the pressure profile and increases the heating of the
material above the proto-neutron star resulting in an explosion even in
rotating stars that would not explode otherwise. Regarding magnetic bubbles we
show that a model with a modest initial uniform magnetic field and uniform
angular velocity of ~0.1 rad/s can form magnetic bubbles due to the very non
homologous nature of the collapse. It is estimated that the buoyancy of the
bubbles causes matter in the proto-neutron star to rise, carrying neutrino-rich
material to the neutron-star surface. This increases the neutrino luminosity
sufficiently at early times to achieve a successful neutrino-driven explosion.
Both magnetic mechanisms thus provide new means for initiating a Type II
core-collapse supernova.

3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
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The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
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The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
28
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: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: bayes-an
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The categories of this paper are: stat