Binary corrected X-ray light curve of Cygnus X-3 : implications for the timing properties of the compact binary system
Abstract
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.
Keywords
Cite
@article{arxiv.astro-ph/0403533,
title = {Binary corrected X-ray light curve of Cygnus X-3 : implications for the timing properties of the compact binary system},
author = {M. Choudhury and A. R. Rao and S. V. Vadawale and A. K. Jain and N. S. Singh},
journal= {arXiv preprint arXiv:astro-ph/0403533},
year = {2007}
}
Comments
Accepted for publication in Astronomy & Astrophysics