Table 7.
Parameters in the external-Compton (EC) scenario for epochs MJD 54761 (Figs. A.1 and A.2), MJD 55098 (Fig. A.4), MJD 56576 (Fig. A.6), and MJD 57293 (Fig. A.8).
Epoch | MJD 54761 | MJD 55098 | MJD 56576 | MJD 57293 | ||
---|---|---|---|---|---|---|
Model | EC-dominated | EC-dominated | EC-dominated | EC-dominated | ||
+ BC (a) | ||||||
Geometrical parameters | ||||||
Bulk Lorentz factor | Γ | 34.0 ( < 1 × 10−1) | 20.4 (5 × 10−1) | 16.5 ( < ×10−1) | 25 (3) | |
Viewing angle | Θ | ° | 1.50 ( < 1 × 10−2) | 1.33 (6 × 10−2) | 1.07 ( < ×10−2) | 1.40 (8 × 10−2) |
Opening angle | θ | ° | 3.0 | = | = | = |
Location of the emission region | r | pc | 5.41 ( < 1 × 10−2) | 4.52 | 4.78 ( < ×10−2) | 4.60 (9 × 10−2) |
Size of the emission region | R | pc | 0.28 | 0.24 | 0.25 | 0.24 |
Light crossing time |
![]() |
day | 17 (1) | 15 (1) | 19 (1) | 15 (3) |
Magnetic field intensity | B | G | 6.03 × 10−2 ( < 1 × 10−4) | 2.9 × 10−1 (2 × 10−2) | 5.00 × 10−2 ( < 10−4) | 7.7 × 10−2 (4 × 10−3) |
Particle distribution | ||||||
Minimum Lorentz factor | γmin | 1.06 ( < 1 × 10−2) | 1.10 (3 × 10−2) | 1.06 ( < 10−2) | 1.6 (3 × 10−1) | |
Maximum Lorentz factor | γmax | 7.20 × 105 ( < 1 × 103) | 7.6 × 105 (6 × 104) | 1.11 × 105 ( < 103) | 9.1 × 104 (2 × 103) | |
Type | ne−(E) | PLC | = | = | = | |
Density | N | cm−3 | 3.39 × 101 ( < 1 × 10−1) | 4.7(3 × 10−1) | 6.96 × 101 ( < ×10−1) | 5.7 × 101 (1 × 101) |
Cutoff Lorentz factor | γcutoff | 4.70 × 103 ( < 1 × 101) | 3.6 × 103 (1 × 102) | 6.6 × 103 (7 × 102) | 4.0 × 103 (2 × 103) | |
Spectral slope | p | 2.05 ( < 1 × 10−2) | 2.35 (1 × 10−2) | 2.30 ( < ×10−2) | 2.4 (1 × 10−1) | |
Accretion disk | ||||||
Black hole mass | MBH | M⊙ | 5 × 108 | = | = | = |
Accretion efficiency | η | 8 × 10−2 | = | = | = | |
Disk inner radius | Rdisk, in | RS | 3.0 | = | = | = |
Disk outer radius | Rdisk, out | RS | 5 × 102 | = | = | = |
Disk luminosity | Ldisk | erg s−1 | 5.0 × 1045 | = | = | = |
Disk temperature | Tdisk | K | 5.96 × 104 | = | = | = |
Disk torus (DT) | ||||||
Temperature | TDT | K | 330 | = | = | = |
Fraction of disk luminosity reprocessed | τDT | 0.1 | = | = | = | |
Broad line region (BLR) | ||||||
Inner radius | RBLR, in | pc | 6.87 × 10−2 | = | = | = |
Outer radius | RBLR, out | pc | 7.56 × 10−2 | = | = | = |
Fraction of disk luminosity reprocessed | τBLR | 0.1 | = | = | = | |
Fit statistics | ||||||
degrees of freedom | d.o.f. | 14 | 16 | 18 | 15 | |
chi-squared statistic | χ2 | 21.9 | 16.0 | 10 | 10.1 |
Notes. Uncertainties for the best-fit values were automatically obtained using the HESSE method of second derivatives and are indicated between parenthesis, parameters without them were frozen during the fit. For uncertainties smaller than the third significant digit, an upper limit is given. The degrees of freedom and the χ2 statistic for the model fit are indicated in the last rows, the residuals are shown in the figures.
The model for this epoch includes an additional component which is independently modeled as bulk-Compton emission from the disk, the reported values refer to the SSC/EC components alone, with the exclusion of the X-ray data. Two possible geometries where considered for the EC-dominated scenario, and their parameters can be found Table 6.
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