Table 8.
Significance values of the observed periods for the local and the global method using the Timmer & Koenig (1995) and Emmanoulopoulos et al. (2013) algorithm, based on the monthly and weekly γ-ray light curves.
| Source | Simulation | Monthly |
Weekly |
||||
|---|---|---|---|---|---|---|---|
| algorithm | PSD-slope | Local | Global | PSD-slope | Local | Global | |
| ⟨βm⟩ | significance | significance | ⟨βw⟩ | significance | significance | ||
| PG 1553+113 | Timmer & Koenig | 0.88 | 3.89σ | 2.14σ | 0.66 | 3.70σ | 2.07σ |
| Emmanoulopoulos | 0.90 | 3.82σ | 1.73σ | 0.67 | 3.83σ | 2.16σ | |
| PKS 0447−439 | Timmer & Koenig | 1.06 | 2.87σ | 1.00σ | 0.79 | 3.02σ | 1.28σ |
| Emmanoulopoulos | 1.07 | 2.94σ | 1.16σ | 0.80 | 3.03σ | 1.25σ | |
| PKS 2155−304 | Timmer & Koenig | 0.95 | 3.62σ | 1.61σ | 0.89 | 3.32σ | 0.84σ |
| Emmanoulopoulos | 0.99 | 3.72σ | 1.64σ | 0.88 | 3.16σ | 0.77σ | |
| PKS 0426−380 | Timmer & Koenig | 0.98 | 2.73σ | 1.04σ | 1.08 | 2.17σ | 0.52σ |
| Emmanoulopoulos | 1.02 | 2.72σ | 0.96σ | 1.09 | 2.35σ | 0.18σ | |
| PKS 0301−243 | Timmer & Koenig | 0.32 | 3.54σ | 1.77σ | 0.53 | 3.39σ | 1.02σ |
| Emmanoulopoulos | 0.36 | 3.72σ | 2.17σ | 0.58 | 3.43σ | 1.43σ | |
Notes. The slopes β were obtained from fitting the γ-ray power spectra with a simple power-law model, and the corresponding success fractions were calculated based on the PSRESP method (Uttley et al. 2002).
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