The re-occurrence of mHz quasi-periodic oscillations in Cygnus X−3

Abstract We have re-analysed archival RXTE data of the X-ray binary Cygnus X−3 with a view to investigate the timing properties of the source. As compared to previous studies, we use an extensive sample of observations that include all the radio/X-ray spectral states that have been categorized in th...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society. Letters 2011-09, Vol.416 (1), p.L84-L88
Hauptverfasser: Koljonen, K. I. I., Hannikainen, D. C., McCollough, M. L.
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Sprache:eng
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Zusammenfassung:Abstract We have re-analysed archival RXTE data of the X-ray binary Cygnus X−3 with a view to investigate the timing properties of the source. As compared to previous studies, we use an extensive sample of observations that include all the radio/X-ray spectral states that have been categorized in the source recently. In this study we identify two additional instances of quasi-periodic oscillations that have centroid frequencies in the mHz regime. These events are all associated to a certain extent with major radio flaring, which in turn is associated with relativistic jet ejection events. We review briefly scenarios whereby the quasi-periodic oscillations may arise.
ISSN:1745-3925
1745-3933
DOI:10.1111/j.1745-3933.2011.01104.x