On the modulation of low frequency Quasi-Periodic Oscillations in black-hole transients

Abstract

We studied the properties of the low-frequency quasi-periodic oscillations detected in a sample of six black hole candidates (XTE J1550-564, H 1743-322, XTE J1859+226, 4U 1630-47,GX 339-4, XTE J1650-500) observed by the Rossi XTE satellite. We analyzed the relation between the full width half maximum and the frequency of all the narrow peaks detected in power density spectra where a type-C QPO is observed. Our goal was to understand the nature of the modulation of the signal by comparing the properties of different harmonic peaks in the power density spectrum. We find that for the sources in our sample the width of the fundamental and of the first harmonic are compatible with a frequency modulation, while that of the sub-harmonic is independent of frequency, possibly indicating the presence of an additional modulation in amplitude. We compare our results with those obtained earlier from GRS 1915+105 and XTE J1550-564.

arXiv comment8 pages, 3 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal

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Cited by in corpus (6)

• A review of quasi-periodic oscillations from black hole X-ray binaries: observation and theory
• Detection of the first infra-red quasi periodic oscillation in a black hole X-ray binary
• Revealing the nature of the QPO and its harmonic in GX 339-4 using frequency-resolved spectroscopy
• Transitions and Origin of the Type-B Quasi-Periodic Oscillation in the Black Hole X-ray Binary MAXI~ J1348--630
• Timing analysis of the black hole candidate EXO 1846-031 with Insight-HXMT monitoring
• Timing analysis of the black-hole candidate Swift J1727.8-1613: detection of a dip-like feature in the high-energy cross spectrum