Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First INTEGRAL observations of Cygnus X-3   We present the first INTEGRAL results on Cyg X-3 from the PV phase
observations of the Cygnus region. The source was clearly detected by the
JEM-X, ISGRI and SPI detectors. The INTEGRAL observations were supported by
simultaneous pointed RXTE observations. Their lightcurves folded over the 4.8
hour binary period are compatible with the mean RXTE/ASM and CGRO/BATSE light
curves. We fit our broad band X-ray/Gamma-ray spectra with a physical model,
which represents the first such published model for Cyg X-3. The main physical
processes in the source are thermal Comptonization and Compton reflection with
parameters similar to those found for black-hole binaries at high Eddington
rates.

23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex