Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prospects for Neutron Star Equation of State Constraints using
  "Recycled" Millisecond Pulsars   Rotation-powered "recycled" millisecond pulsars are a variety of
rapidly-spinning neutron stars that typically show thermal X-ray radiation due
to the heated surface of their magnetic polar caps. Detailed numerical modeling
of the rotation-induced thermal X-ray pulsations observed from recycled
millisecond pulsars, including all relevant relativistic and stellar
atmospheric effects, has been identified as a promising approach towards an
astrophysical determination of the true neutron star mass-radius relation, and
by extension the state of cold matter at densities exceeding those of atomic
nuclei. Herein, I review the basic model and methodology commonly used to
extract information regarding neutron star structure from the pulsed X-ray
radiation observed from millisecond pulsars. I also summarize the results of
past X-ray observations of these objects and the prospects for precision
neutron star mass-radius measurements with the upcoming Neutron Star Interior
Composition Explorer (NICER) X-ray timing mission.

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The categories of this paper are: cond-mat
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: math