2004/03/22 by M. Choudhury, A. R. Rao, S. V. Vadawale +2
Physics and Astronomy · #astro-ph
paper · pdf · doi:10.1051/0004-6361:20040110
published as Astron.Astrophys. 420 (2004) 665-671 · Accepted for publication in Astronomy & Astrophysics
arxiv created 2004/03/22 · arxiv updated 2009/12/01
We study the binary corrected X-ray light curve of Cygnus X-3 using the RXTE-ASM data and RXTE-PCA data. We find that the X-ray template derived from the EXOSAT observations adequately explains the binary variations. Using the recently determined quadratic binary ephemeris we correct the RXTE-PCA lightcurve and obtain the power spectrum which shows distinct features of shifting towards the low frequency regime vis-a-vis the Galactic X-ray binaries. The power spectrum doesn't vary from the hard to the soft state. We also obtain the binary corrected RXTE-ASM monitoring lightcurve and examine the previously obtained correlation between soft X-ray (2-12 keV from RXTE-ASM), hard X-ray (20-100 keV from CGRO-BATSE) and radio (2.2 GHz from GBI) after the binary correction. We find that the correlation time scale is less than a day.