Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: X-Ray Timing, Spectroscopy and Photometry of the Anomalous X-Ray Pulsar
  Candidate CXOU J010043.1-721134   We present new X-ray timing and spectral results on the 8.0-second X-ray
pulsar CXOU J010043.1-721134 from a series of observations using the Chandra
X-ray Observatory. We find a spin period in 2004 January of 8.020392pm0.000009
seconds. Comparison of this to 2001 Chandra observations implies a period
derivative dot{P} = (1.88 pm 0.08) times 10^{-11} s s^{-1}, leading to an
inferred dipole surface magnetic field of 3.9 times 10^{14} G. The spectrum is
well fit to an absorbed blackbody of temperature kT = 0.38pm0.02 keV with a
power law tail of photon index Gamma = 2.0pm0.6. We find that the source has an
unabsorbed X-ray flux (0.5-10 keV) of 4(+2-1) times 10^{-13} erg cm^{-2} s^{-1}
and a corresponding X-ray luminosity of ~2 times 10^{35} erg s^{-1} for a
distance of 60 kpc. These properties support classification of CXOU
J010043.1-721134 as the seventh confirmed anomalous X-ray pulsar,the eleventh
confirmed magnetar, and the first magnetar to be identified in the Small
Magellanic Cloud.

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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
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The categories of this paper are: nlin
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The categories of this paper are: cond-mat
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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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: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: physics