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Table 1

Properties of the three microquasars GRO 1655-40, GRS 1915+105, and XTE 1550-564.

Source νL [Hz] νU [Hz] Mass [M]

GRO 1655-40 300 ± 5 450 ± 3 6.0–6.6

GRS 1915+105 113 ± 5 168 ± 3 10.0–18.0

XTE 1550-564 184 ± 5 276 ± 3 8.4–10.8

Notes. The individual columns display the frequencies of the lower and upper 3:2 QPO peaks (Strohmayer 2001; Remillard et al. 2002, 2003) and the estimated ranges of mass (Greene et al. 2001; Greiner et al. 2001; Orosz et al. 2002; McClintock & Remillard 2003).

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