Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: PSR J1847-0130: A Radio Pulsar with Magnetar Spin Characteristics   We report the discovery of PSR J1847-0130, a radio pulsar with a 6.7-s spin
period, in the Parkes multibeam survey of the Galactic plane. The slowdown rate
for the pulsar, 1.3x10^{-12} s/s, is high and implies a surface dipole magnetic
field strength of 9.4x10^{13} G. This inferred dipolar magnetic field strength
is the highest by far among all known radio pulsars and over twice the
``quantum critical field'' above which some models predict radio emission
should not occur. The inferred dipolar magnetic field strength and period of
this pulsar are in the same range as those of the anomalous X-ray pulsars,
which have been identified as being "magnetars" whose luminous X-ray emission
is powered by their large magnetic fields. We have examined archival ASCA data
and place an upper limit on the X-ray luminosity of J1847-0130 which is lower
than the luminosities of all but one AXP. The properties of this pulsar prove
that inferred dipolar magnetic field strength and period cannot alone be
responsible for the unusual high-energy properties of the magnetars and creates
new challenges for understanding the possible relationship between these two
manifestations of young neutron stars.

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The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex