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Table 1
Model parameters for Cen A.
| Parameter | Value |
|
|
|
| Mbh: black hole mass | 108 M⊙ |
| Rg: gravitational radius | 1.47 × 1013 cm |
 : jet kinetic power at z0 |
6.28 × 1044 erg s-1 |
qj: ratio  |
0.1 |
| Γb(z0): bulk Lorentz factor of the jet at z0 | 3 |
| θ: viewing angle | 30° |
| ξj: jet’s half-opening angle | 2.5° |
| qrel: jet’s content of relativistic particles | 0.05 |
| a: hadron-to-lepton power ratio | 0.025 |
| z0: jet’s launching point | 50 Rg |
| qm: magnetic to kinetic energy ratio at zacc | 0.38 |
| zacc: injection point | 132 Rg |
| Δz: size of injection zone | 2 zacctanξj = 11.5 Rg |
| B(zacc): magnetic field at zacc | 3065 G |
| m: index for magnetic field dependence on z | 1.5 |
| s: injection spectral index | 1.8 |
| η: acceleration efficiency | 10-2 |
 : minimum proton energy |
3 GeV |
 : minimum electron energy |
0.1 GeV |
 : maximum primary proton energy |
2 × 107 GeV |
 : maximum primary electron energy |
200 GeV |
| NH: column dust density | 1023 cm-2 |
| nc(zacc): cold matter density inside the jet at zacc | 3 × 108 cm-3 |
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