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Table 3.
Flux upper limits of the non-thermal emission of Cyg OB2 #8A as a function of Γ.
| Γ | FINTEGRAL | FNuSTAR |
|---|---|---|
| (10−14 erg s−1 cm−2) | (10−14 erg s−1 cm−2) | |
| 1.0 | 7.8 | 7.1 |
| 1.1 | 8.4 | 6.5 |
| 1.2 | 9.0 | 6.0 |
| 1.3 | 9.5 | 5.5 |
| 1.4 | 10.1 | 5.0 |
| 1.5 | 10.6 | 4.6 |
| 1.6 | 11.1 | 4.1 |
| 1.7 | 11.6 | 3.7 |
| 1.8 | 12.0 | 3.3 |
| 1.9 | 12.4 | 3.0 |
| 2.0 | 12.7 | 2.6 |
| 2.1 | 13.0 | 2.4 |
| 2.2 | 13.3 | 2.1 |
| 2.3 | 13.5 | 1.9 |
| 2.4 | 13.7 | 1.6 |
| 2.5 | 13.8 | 1.5 |
Notes. FINTEGRAL and FNuSTAR stand for the 3σ upper limits in the 20−30 keV energy band on the flux of a non-thermal component as allowed by INTEGRAL observations of the Cygnus OB2 region and NuSTAR observations of Cyg OB2 #8A.
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