SIMBAD references

2005ApJ...629..403C - Astrophys. J., 629, 403-407 (2005/August-2)

The ABC of low-frequency quasi-periodic oscillations in black hole candidates: analogies with Z sources.


Abstract (from CDS):

Three main types of low-frequency quasi-periodic oscillations (LFQPOs) have been observed in black hole candidates. We reanalyzed RXTE data of the bright systems XTE J1859+226, XTE J1550-564, and GX 339-4, which show all three types. We review the main properties of these LFQPOs and show that they follow a well-defined correlation in a fractional rms versus softness diagram. We show that the frequency behavior through this correlation presents clear analogies with that of horizontal-, normal-, and flaring-branch oscillations in Z sources, with the inverse of the fractional rms being the equivalent of the curvilinear coordinate Sz through the Z track.

Abstract Copyright:

Journal keyword(s): Accretion, Accretion Disks - Black Hole Physics - Stars: Oscillations - X-Rays: Binaries

Simbad objects: 9

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