Table 1
Frequency relations corresponding to individual QPO models and the spins implied by the 3:2 QPOs in GRS 1915+105 and the mass-range 10−18 M⊙.
| Model | Relations | νK/νr or  |
a ~ | |
|
|
||||
| RP | νL = νK − νr | νU = νK | 3/1∗ | <0.55 |
| TD | νL = νK | νU = νK + νr | 2/1 | <0.45 |
|
|
||||
| WD |
|
νU = 2νK − νr | 2/1 | <0.45 |
| Ep | νL = νr | νU = νθ | 3/2∗ | 0.65 – 1 |
| Kp | νL = νr | νU = νK | 3/2∗ | 0.70 – 1 |
| RP1 | νL = νK − νr | νU = νθ | – | <0.80 |
| RP2 | νL = νK − νr | νU = 2νK − νθ | – | <0.45 |
Notes. The middle column indicates the ratio of the epicyclic frequencies determining the radii corresponding to the observed 3:2 ratio. The indicated ranges of spin also represent total spin ranges for the whole group of the three microquasars (see Fig. 2).
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