Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rotation rate of the solar core as a key constraint to magnetic angular
  momentum transport in stellar interiors   Context: The internal rotation of the Sun constitutes a fundamental
constraint when modelling angular momentum transport in stellar interiors. In
addition to the more external regions of the solar radiative zone probed by
pressure modes, measurements of rotational splittings of gravity modes would
offer an invaluable constraint on the rotation of the solar core. Aims: We
study the constraints that a measurement of the core rotation rate of the Sun
could bring on magnetic angular momentum transport in stellar radiative zones.
Results: We first show that models computed with angular momentum transport by
magnetic instabilities and a recent prescription for the braking of the stellar
surface by magnetized winds can reproduce the observations of surface
velocities of stars in open clusters. These solar models predict both a flat
rotation profile in the external part of the solar radiative zone probed by
pressure modes and an increase in the rotation rate in the solar core, where
the stabilizing effect of chemical gradients plays a key role. A rapid rotation
of the core of the Sun, as suggested by reported detections of gravity modes,
is thus found to be compatible with angular momentum transport by magnetic
instabilities. Moreover, we show that the efficiency of magnetic angular
momentum transport in regions of strong chemical gradients can be calibrated by
the solar core rotation rate independently from the unknown rotational history
of the Sun. In particular, we find that a recent revised prescription for the
transport of angular momentum by the Tayler instability can be easily
distinguished from the original Tayler-Spruit dynamo, with a faster rotating
solar core supporting the original prescription.

15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: q-fin