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Table 3.
Model parameters from the initial fits to the V404 Cyg preflare hard X-ray spectrum (10–79 keV).
| Pure continuum model |
Absorbed continuum model |
Reprocessed continuum model |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| CUTOFFPL | COMPTT | POWERLAW | CUTOFFPL | COMPTT | PEXRAV | RELXILL | RELXILLCP | ||
| Param. | Unit | (C1) | (C2) | (A1) | (A2) | (A3) | (R1) | (R2) | (R3) |
| NH | 1022 cm−2 | 363 ± 7 | 290 ± 15 | 299 ± 13 | |||||
| fcov | 0.931 ± 0.002 | 0.86 ± 0.01 | 0.89 ± 0.01 | ||||||
| Γ | −1.64 ± 0.05 | 3.85 ± 0.03 | 2.2 ± 0.3 | 1.84 ± 0.04 | 1.11 |
1.96 |
|||
| Ecut | keV | 5.6 ± 0.1 | 18 ± 3 | 20 ± 1 | 23.3 ± 0.6 | ||||
| kTseed | keV | 4.6 |
0.1 | ||||||
| kTe | keV | 24 |
10 ± 1 | 13.7 |
|||||
| τ | 0.7 |
3.6 ± 0.5 | |||||||
| Rf | >411 | >480 | −2 | ||||||
| θinc | deg | 67 | < 11 | < 8 | |||||
| a | 0.2 ± 0.2 | 0.6 |
|||||||
| log ξ | 2.30 |
2.00 |
|||||||
| χ2/d.o.f. | 713/279 | 491/278 | 429/278 | 293/277 | 299/277 | 356/278 | 314/275 | 340/276 | |
 |
2.56 | 1.77 | 1.54 | 1.06 | 1.08 | 1.28 | 1.14 | 1.23 | |
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