Table 1.
Parameters utilized in modeling the delay and spectral energy distribution (SED) of NGC 5548 for the three models: A, B, and C.
| Parameters | Model A | Model B | Model C |
|---|---|---|---|
| (1) | (2) | (3) | (4) |
| Black hole mass (MBH) | 5 × 107 (ref1) | 5.5 × 107 (ref4) | 5 × 107 (ref1) |
| Corona height (h) | 20 (a) | 43 (ref4) | 48.29 (a) |
| Inclination angle (i) | 40 (ref2) | 45 (ref4) | 40 (ref2) |
| Warm corona inner radius | − | 43 (ref4) | 6 (a) |
| Warm corona temperature | − | 1.98 × 106 (ref4) | 6.58 × 106 (a) |
| Warm corona optical depth/Photon index | − | 2.28 (ref4) | 20.26 (a) |
| Inner cold disk radius (rin) | 35 (a) | 151 (ref4) | 94.87 (a) |
| Outer cold disk radius (rout) | 10 000 (a) | 282 (ref4) | 10 000 (a) |
| Color correction | 2.4 (ref2) | 1.0 (ref4) | 1.0 (a) |
| BLR contribution (fBLR) | 12% (a) | 40% (a) | 30% (a) |
| Lamp luminosity (Lx) | 1.26 × 1044 (a) | 1.247 × 1044 (ref4) | 9.68 × 1043 (a) |
| Eddington ratio | 0.02 (ref3) | 0.027 (ref4) | 0.017 (a) |
| Starlight | 6.74 × 10−15 | 5.39 × 10−15 | 6.76 × 10−15 |
Notes. Columns include (1) name of the parameter used in the model, with values given in columns (2), (3), and (4) for models A, B, and C, respectively. The black hole mass in unit of M⊙, coronal height in unit of rg, inclination angle in degree, inner disk radius and outer disk radius in rg, and lamp luminosity in erg s−1. Warm corona optical depth or a photon index are alternative (equivalent) parameters of Comptonization models. Starlight normalization is given in erg s−1 cm−2 Å−1 at 5100 Å. Some values were taken from the literature, others are derived as best fit values in the current work, as follows: references for the fixed parameters during fitting: (ref1) Netzer (2022; ref2) Kammoun et al. (2021a; ref3) Crenshaw et al. (2009; ref4) Kubota & Done (2018; a) fitted parameters. For model C, we assumed a standard ΛCDM cosmology, with H0 = 70 km s−1 Mpc−1, Ωm = 0.3.
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