Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detection of an X-ray Pulsation for the Gamma-ray Pulsar Centered in CTA
  1   We report the detection of X-ray pulsations with a period of ~315.87 ms from
the 2009 XMM-Newton observation for the radio-quiet gamma-ray pulsar, LAT PSR
J0007+7303, centered in the supernova remnant CTA 1. The detected pulsed period
is consistent with the gamma-ray periodicity at the same epoch found with the
Fermi Gamma-ray Space Telescope. The broader sinusoidal structure in the folded
light curve of the X-ray emission is dissimilar to that of the gamma-ray
emission, and the phase of the peak is about 0.5 shifting from the peak in the
gamma-ray bands, indicating that the main component of the X-rays originates
from different sites of the pulsar. We conclude that the main component of the
X-ray pulsation is contributed by the thermal emission from the neutron star.
Although with a significantly different characteristic age, PSR~J0007+7303 is
similar to Geminga in emission properties of X-rays and gamma-rays; this makes
PSR J0007+7303 the second radio-quiet gamma-ray pulsar with detected X-ray
pulsations after Geminga.

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The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio