Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutrino cooling and spin-down of rapidly rotating compact stars   The gravitational-wave instability of r-modes in rapidly rotating compact
stars is believed to spin them down to angular frequencies of about a tenth of
the Kepler frequency soon after their birth in a Supernova. We point out that
the r-mode perturbation also impacts the neutrino cooling and viscosity in hot
compact stars via processes that restore weak equilibrium. We illustrate this
fact with a simple model of spin-down due to gravitational wave emission in
compact stars composed entirely of three-flavor degenerate quark matter (a
strange quark star). Non-equilibrium neutrino cooling of this oscillating fluid
matter is quantified. Our results imply that a consistent treatment of thermal
and spin-frequency evolution of a young and hot compact star is a requisite in
estimating the persistence of gravitational waves from such a source.

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The categories of this paper are: math
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
19
The categories of this paper are: eess
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The categories of this paper are: quant-ph
16
The categories of this paper are: stat