Volume 411, Number 1, November III 2003
Special letters issue on: first science with integral
|Page(s)||L441 - L445|
|Published online||17 November 2003|
Letter to the Editor
INTEGRAL observations of SS433, a supercritically accreting microquasar with hard spectrum*
Sternberg Astronomical Institute, Universitetskij pr, 13, 119992 Moscow, Russia
2 Space Research Institute, Russian Academy of Sciences, Profsoyuznaya 84/32, 117997 Moscow, Russia
3 Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, Postfach 1317, 85741 Garching, Germany
Corresponding author: A. M. Cherepashchuk, firstname.lastname@example.org
Accepted: 27 August 2003
Observations of SS433 by INTEGRAL carried out in March–May 2003 are presented. SS433 is evidently detected on the INTEGRAL images of the corresponding sky region in the energy bands 25–50 and 50–100 keV. The precessional variability of the hard X-ray flux is clearly seen. The X-ray eclipse caused by the binary orbital motion is also detected. A possible origin of the hard continuum is briefly discussed.
Key words: X-ray: binaries / observations
© ESO, 2003
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