Table 2
Four ⟨ FS ⟩ flux bins with β ± σ(β), number of sources Nsour, number of observations Nobs and correlation coefficient r.
| ⟨ FS ⟩ min | ⟨ FS ⟩ max | Nsour | Nobs | β ± σ(β) | ⟨ σ(Γ) ⟩ | r |
|
|
||||||
| 4.26 × 10-16 | 5 × 10-15 | 401 | 1039 | − 0.86 ± 0.08 | 0.37 | 0.295 |
| 5 × 10-15 | 10-14 | 729 | 1923 | − 0.71 ± 0.06 | 0.33 | 0.261 |
| 10-14 | 2.5 × 10-14 | 963 | 2689 | − 0.71 ± 0.04 | 0.25 | 0.317 |
| 2.5 × 10-14 | 4.30 × 10-12 | 715 | 2186 | − 0.54 ± 0.03 | 0.16 | 0.329 |
Notes. A column showing the average Γ error for each bin is also shown, from which it can be seen that fainter sources also have average greater errors on the spectral slope Γ. The bins at higher fluxes have a smaller β (in absolute value), which means they are less variable in spectrum, but higher correlations are found for these sources. All probabilities of finding the correlations by chance are found to be smaller than 10-10.
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