Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: INTEGRAL Observations of Cygnus X-3   The peculiar X-ray binary Cygnus X-3 has been observed on several occasions
with the X/gamma-ray instruments on board INTEGRAL. We have collected data from
available public and Galactic Plane Scan observations between December 2002 and
December 2003 and summed them together into two broad-band spectra,
representing different physical spectral states of the source. We have fitted
the two spectra with models including Comptonization and Compton reflection,
similar to those found for black-hole binaries at high accretion rates.

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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int