Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Morphology and characteristics of radio pulsars   This review describes the observational properties of radio pulsars, fast
rotating neutron stars, emitting radio waves. After the introduction we give a
list of milestones in pulsar research. The following chapters concentrate on
pulsar morphology: the characteristic pulsar parameters such as pulse shape,
pulsar spectrum, polarization and time dependence. We give information on the
evolution of pulsars with frequency since this has a direct connection with the
emission heights, as postulated in the radius to frequency mapping (RFM)
concept. We deal successively with the properties of normal (slow) pulsars and
of millisecond (fast-recycled) pulsars. The final chapters give the
distribution characteristics of the presently catalogued 1300 objects.

18
The categories of this paper are: econ
2
The categories of this paper are: math
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
21
The categories of this paper are: adap-org