Binary corrected X-ray light curve of Cygnus X-3: implications for the timing properties of the compact binary system

Choudhury, M. ; Rao, A. R. ; Vadawale, S. V. ; Jain, A. K. ; Singh, N. S. (2004) Binary corrected X-ray light curve of Cygnus X-3: implications for the timing properties of the compact binary system Astronomy & Astrophysics, 420 (2). pp. 665-671. ISSN 0004-6361

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Related URL: http://dx.doi.org/10.1051/0004-6361:20040110

Abstract

We study the binary corrected X-ray light curve of Cygnus X-3 using the RXTE-ASM (All Sky Monitor) 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.

Item Type:Article
Source:Copyright of this article belongs to EDP Sciences.
Keywords:Accretion; Accretion Disks; Stars: Binaries: Close; Stars: Individual: Cygnus X-3; Radio Continuum: Stars; X-rays: Binaries
ID Code:85581
Deposited On:03 Mar 2012 14:51
Last Modified:19 May 2016 01:33

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