Table 1.
Results of the fit of Eq. (1) to the optical and X-ray data.
| Parameters | Optical | X-ray |
|---|---|---|
| t0 [MJD] | 58283.0 | 58283.0 |
| f [1/d] | 1.4517 ± 0.0001 | 1.4517 (fixed) |
| p [d] | 0.68885 ± 0.00005 | 0.68885 (fixed) |
| A | 0.117 ± 0.002 [MAG] | 240.7 ± 15.5 [ct/s] |
| ϕ [rad] | 0.67π ± 0.03 | 1.77π ± 0.07 |
| C | 0.017 ± 0.002 [MAG] | −17.5 ± 11.4 [ct/s] |
Notes. t0 is fixed, while the other parameters have been computed through a MCMC procedure (emcee; Foreman-Mackey et al. 2013). The optical fit refers to the interval MJD 58283-58391, while the X-ray fit to the interval MJD 58309-58326. Since the X-ray data were not enough to compute an accurate value for the frequency f, we decided to fix it to the value found using the optical data and to free only the other parameters. For reference, we also report the period found by Niijima et al. (2021) in a similar time window: pN21 = 0.688907 ± 0.000009 d.
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