Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Very Young Radio Pulsar J1357-6429   We report the discovery of a radio pulsar with a characteristic age of 7300
years, making it one of the 10 apparently youngest Galactic pulsars known. PSR
J1357-6429, with a spin period of P = 166 ms and spin-down luminosity of 3.1e36
ergs/s, was detected during the Parkes multibeam survey of the Galactic plane.
We have measured a large rotational glitch in this pulsar, with Delta P/P =
-2.4e-6, similar in magnitude to those experienced occasionally by the Vela
pulsar. At a nominal distance of only ~ 2.5 kpc, based on the measured free
electron column density of 127 pc/cc and the electron distribution model of
Cordes & Lazio, this may be, after the Crab, the nearest very young pulsar
known. The pulsar is located near the radio supernova remnant candidate
G309.8-2.6.

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The categories of this paper are: cs
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an