Cygnus X-3首次INTEGRAL观测
摘要
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.
关键词
引用
@article{arxiv.astro-ph/0308395,
title = {First INTEGRAL observations of Cygnus X-3},
author = {O. Vilhu and L. Hjalmarsdotter and A. A. Zdziarski and A. Paizis and M. L. McCollough and V. Beckmann and T. J. -L. Courvoisier and K. Ebisawa and P. Kretschmar and P. Goldoni and N. J. Westergaard and P. Hakala and D. Hannikainen},
journal= {arXiv preprint arXiv:astro-ph/0308395},
year = {2009}
}
备注
6 pages, 5 colour figures, accepted for Astronomy and Astrophysics Letters, a special INTEGRAL issue