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Table 23
Radio LF and HF spectral index distributions for different values of the break frequency νBreak and of the minimum number of frequency bands considered for the fit.
| Low frequency | High frequency | |||||||||
| νBreak | No. of frequencies | Class | No. of sources | ⟨αLF⟩ | σLF | No. of sources | ⟨αHF⟩ | σHF | ||
|
|
||||||||||
| 30 | 3 | ALL | 47 | 0.00 ± 0.04 | 0.27 | 69 | −0.51 ± 0.04 | 0.30 | ||
| 30 | 5 | ALL | 46 | 0.00 ± 0.04 | 0.27 | 57 | −0.49 ± 0.03 | 0.26 | ||
| 44 | 3 | ALL | 47 | −0.02 ± 0.04 | 0.25 | 66 | −0.64 ± 0.03 | 0.26 | ||
| 44 | 5 | ALL | 47 | −0.02 ± 0.04 | 0.25 | 47 | −0.62 ± 0.03 | 0.22 | ||
| 70 | 3 | ALL | 63 | −0.08 ± 0.03 | 0.28 | 66 | −0.67 ± 0.03 | 0.28 | ||
| 70 | 5 | ALL | 47 | −0.02 ± 0.04 | 0.25 | 35 | −0.65 ± 0.04 | 0.22 | ||
| 100 | 3 | ALL | 65 | −0.11 ± 0.03 | 0.27 | 48 | −0.56 ± 0.04 | 0.26 | ||
| 100 | 5 | ALL | 47 | −0.02 ± 0.04 | 0.24 | 15 | −0.52 ± 0.05 | 0.19 | ||
|
|
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| 70 | 3 | FSRQ | 39 | −0.11 ± 0.04 | 0.28 | 40 | −0.73 ± 0.04 | 0.27 | ||
| 70 | 3 | BL Lac | 12 | −0.08 ± 0.08 | 0.29 | 14 | −0.51 ± 0.07 | 0.27 | ||
| 70 | 3 | Unc. Type | 12 | −0.02 ± 0.08 | 0.29 | 12 | −0.64 ± 0.07 | 0.25 | ||
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