2004A&A...420..665C


Query : 2004A&A...420..665C

2004A&A...420..665C - Astronomy and Astrophysics, volume 420, 665-671 (2004/6-3)

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. and SINGH N.S.

Abstract (from CDS):

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 (2-12keV from RXTE ASM), hard X-ray (20-100keV from CGRO-BATSE) and radio (2.2GHz from GBI) after the binary correction. We find that the correlation time scale is less than a day.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - stars: binaries: close - stars: individual: Cygnus X-3 - radio continuum: stars - X-rays: binaries

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2628 0
2 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4337 0
3 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1940 2

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