The 67 Hz QPO and Other High-Frequenecy Oscillations from the Black Hole Binary GRS1915+105

Details The 67 Hz QPO and Other High-Frequenecy Oscillations from the Black Hole Binary GRS1915+105 The 67 Hz QPO and Other High-Frequenecy Oscillations from the Black Hole Binary GRS1915+105

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20510405r&link_type=abstract

American Astronomical Society Meeting 205, #104.05; Bulletin of the American Astronomical Society, Vol. 36, p.1516

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Scientific paper

We first focus on 350 RXTE observations of GRS1915+105 while the source is in quasi-steady states (rms < 16% of mean in 1 s bins at 2-30 keV). The great majority of these are either in the hard state with detectable radio emission, or in a thermal state that is radio quiet. The 67 Hz QPO is seen in the thermal state, when the source enters a particular region of the color-color diagram. The correlation with X-ray flux is substantially weaker.
The other high-frequency QPOs (113 and 168 Hz) in GRS1915+105 are only seen by dissecting light curves for particular types of variable states. We review the spectral properties associated with these oscillations. They resemble the high-frequency QPOs in other black hole binaries, unlike the 67 Hz QPO.

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