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Table 1
Parameters for the different types of stars.
| Parameter | O4I | O9I | |
|
|
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| R0 | Standoff radius [pc] | 8.3 | 0.2 |
| V ⋆ | Spatial velocity [km s-1] | 100 | 30 |
| Vwa | Wind velocity [km s-1] | 2.2 × 103 | 0.8 × 103 |
| Ṁ w a | Wind mass loss rate [M⊙ yr-1] | 10-4 | 10-6 |
| na | Ambient density [cm-3] | 1 | 100 |
| Bb | Magnetic field [G] | ~3.0 × 10-5 | ~10-5 |
| η | Acceleration efficiency | ~2.0 × 10-5 | ~2.7 × 10-6 |
| L | Available power [erg s-1] | ~3.2 × 1036 | ~4.3 × 1033 |
| a | Hadron-to-lepton energy ratio | 1 | 100 |
| qrel | Jet content of relativistic particles | 10% | 10% |
| α | Injection index | 2 | 2 |
| Δ | Thickness of shocked wind [R0] | ~0.3 | ~0.3 |
| Volacc | Acceleration region volume [cm-3] | ~7 × 1056 | ~1051 |
| L ⋆ c | Star luminosity [L⊙] | ~7 × 105 | ~5 × 104 |
| TIR | Dust temperature [K] | ~24 | ~54 |
Notes.
(b)
This value corresponds to the magnetic field in the acceleration region, obtained from Eq. (5).
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