Query : 2001A&A...380..520R

2001A&A...380..520R - Astronomy and Astrophysics, volume 380, 520-525 (2001/12-3)

Reflection and noise in the low spectral state of GX 339-4.


Abstract (from CDS):

We analyze RXTE/PCA observations of GX 339-4 in the low spectral state from 1996-1997 and show that the pattern of its spectral and temporal variability is nearly identical to that of Cyg X-1. In particular, a tight correlation exists between the QPO centroid frequency and the spectral parameters. An increase of the QPO centroid frequency is accompanied with an increase of the amplitude of the reflected component and a steepening the slope of the underlying power law. Fourier frequency resolved spectral analysis showed, that the variability of the reflected component at frequencies higher than ∼1-10Hz is suppressed in comparison with that of the primary emission.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - black hole physics - stars: binaries: general - stars: individual: GX 339-4 - X-rays: general - X-rays: stars

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
1 V* V821 Ara HXB 17 02 49.3876391280 -48 47 23.087954544 16.20 16.30 15.5     ~ 1934 0
2 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4123 0

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