Table 1.
Correlation results: VHE vs X-ray flux.
| VHE (0.2–1 TeV) | VHE (> 1 TeV) | |||||
|---|---|---|---|---|---|---|
| Normalized | Pearson correlation | Normalized | Pearson correlation | |||
| slope of fit | coefficient (σ) | DCF | slope of fit | coefficient (σ) | DCF | |
| Swift/XRT (0.3–2 keV) | 4.34 ± 0.19 |
 (3.7) |
0.72 ± 0.59 | 4.14 ± 0.27 |
 (3.9) |
0.74 ± 0.59 |
| Excluding flare | 1.01 ± 0.21 |
 (1.4) |
0.37 ± 0.14 | 1.28 ± 0.25 |
 (1.6) |
0.42 ± 0.17 |
| Swift/XRT (2–10 keV) | 2.57 ± 0.13 |
 (4.7) |
0.81 ± 0.64 | 2.72 ± 0.16 |
 (4.9) |
0.83 ± 0.64 |
| Excluding flare | 1.64 ± 0.20 |
 (2.2) |
0.54 ± 0.21 | 1.66 ± 0.21 |
 (2.5) |
0.60 ± 0.20 |
Notes. See Sect. 5 and Fig. 3. The normalized slope is the gradient of the fit in Fig. 3, divided by the ratio of the average of each distribution, in order to create a dimensionless scaling factor. Pearson correlation function 1σ errors and the significance of the correlation are calculated following Press et al. (2002). Discrete correlation function (DCF) and errors are calculated as prescribed in Edelson & Krolik (1988).
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