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Table 5.
Summary of the time lags expressed in light days in the observer’s frame between the four continuum light curves of PG 2130+099.
| Method | Filter (a) | PSF photometry | Image subtraction | Mean ± d (b) |
|---|---|---|---|---|
| ICCF (≥0.8 rmax) | NB4250 |
 |
 |
−2.7 ± 0.9 |
| NB5975 |
 |
 |
−0.9 ± 0.1 | |
| NB8025 |
 |
 |
+1.6 ± 0.2 | |
| ZDCF (≥0.8 rmax) | NB4250 |
 |
 |
−2.5 ± 1.2 |
| NB5975 |
 |
 |
−0.9 ± 0.4 | |
| NB8025 |
 |
 |
+1.6 ± 0.2 | |
| FR/RSS (≥0.8 rmax) | NB4250 |
 |
 |
−2.8 ± 0.8 |
| NB5975 |
 |
 |
−1.0 ± 0.1 | |
| NB8025 |
 |
 |
+1.5 ± 0.1 | |
| Von Neumann Estimator | NB4250 |
 |
 |
−1.9 ± 1.4 |
| NB5975 |
 |
 |
−0.4 ± 0.2 | |
| NB8025 |
 |
 |
+0.6 ± 0.4 | |
| JAVELIN | NB4250 |
 |
 |
−1.8 ± 0.9 |
| NB5975 |
 |
 |
−0.9 ± 0.3 | |
| NB8025 |
 |
 |
+1.7 ± 0.2 | |
| MICA | NB4250 |
 |
 |
−1.8 ± 1.1 |
| NB5975 |
 |
 |
−0.5 ± 0.1 | |
| NB8025 |
 |
 |
+0.9 ± 0.1 | |
| Mean all methods (c) | NB4250 | −3.1 ± 0.5 | −1.5 ± 0.6 | −2.3 ± 0.8 |
| NB5975 | −0.8 ± 0.3 | −1.0 ± 0.6 | −0.9 ± 0.1 | |
| NB8025 | +1.4 ± 0.3 | +1.2 ± 0.5 | +1.3 ± 0.1 | |
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