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Table 4
Location of the event and cosmological horizon, and of the innermost and outermost stable circular orbits for R0 > 0 and a = 0.99 in f(R)-Kerr space-time.
| R0 | Radii | Radius | Radius innermost | Radius outermost |
| event horizons | cosmological horizon | stable circular orbit | stable circular orbit | |
|
|
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| 10-6 | xeh1 = 0.86, xeh2 = 1.14 | xch = 3463 | xisco = 1.4545 | xosco = 143.59 |
| 10-4 | xeh1 = 0.86, xeh2 = 1.14 | xch = 345.40 | xisco = 1.4547 | xosco = 30.53 |
| 6.67 × 10-4 | xeh1 = 0.86, xeh2 = 1.14 | xch = 113.12 | xisco = 1.4560 | xosco = 16.002 |
| 10-3 | xeh1 = 0.86, xeh2 = 1.14 | xch = 108.53 | xisco = 1.4567 | xosco = 13.93 |
| 10-2 | xeh1 = 0.85, xeh2 = 1.15 | xch = 33.59 | xisco = 1.4765 | xosco = 6.25 |
| 10-1 | xeh1 = 0.83, xeh2 = 1.22 | xch = 9.80 | xisco = 1.92 | xosco = 3.22 |
Notes. Here x ≡ r/rg.
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