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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.

(a)

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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