Table 4.
Summary of the parameters used for and derived from the modelling of the multi-epoch SEDs of PKS 2004−447 shown in Fig. 6.
| Parameter | Symbol | Low activity | Pre-flare | Flare | Post-flare |
|---|---|---|---|---|---|
| Particle spectral index before break energy | s1 | 2.1 | 2.1 | 1.7 | 2.0 |
| Particle spectral index after break energy | s2 | 4.0 | 4.0 | 4.0 | 4.0 |
| Minimum Lorentz factor of the particle distribution |  |
4 | 4 | 4 | 4 |
| Break Lorentz factor of the particle distribution |  |
1.3 × 103 | 1.1 × 103 | 0.9 × 103 | 1.1 × 103 |
| Maximum Lorentz factor of the particle distribution |  |
6000 | 5500 | 5000 | 5000 |
| Particle energy density, in erg cm−3 |  |
0.18 | 0.22 | 0.10 | 0.22 |
| Magnetic field, in Gauss | B | 0.4 | 0.3 | 0.3 | 0.3 |
| Bulk Lorentz factor | Γb | 11 | 20 | 26 | 24 |
| Dissipation distance, in 10−2 parsec | Rdist | 2.01 | 2.01 | 2.01 | 2.01 |
| Size of the emission region, in 1015 cm | Rblob | 6.2 | 6.2 | 6.2 | 5.17 |
| Compton dominance | CD | 2 | 10 | 18 | 20 |
| Jet power in electrons, in erg s−1, in log scale | Pe | 44.2 | 44.8 | 44.7 | 45.0 |
| Jet power in magnetic field, in erg s−1, in log scale | PB | 42.7 | 43.0 | 43.2 | 43.0 |
| Radiative jet power, in erg s−1, in log scale | Pr | 43.7 | 44.9 | 45.2 | 45.2 |
| Jet power in protons, in erg s−1, in log scale | Pp | 46.2 | 46.8 | 46.3 | 46.9 |
Notes. The central black hole mass and the accretion disk luminosity are taken as 7 × 107 M⊙ and 2 × 1043 erg s−1, respectively, and we assume the characteristic temperature of the IR-torus to be 1100 K. A viewing angle of 2° is adopted. For the given accretion disk luminosity, the size of the BLR and dusty torus are 4.6 × 10−3 pc and 3.4 × 10−2 pc, respectively. We note that the jet powers are computed by assuming a two-sided jet.
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