Table 1.
Best-fitting values of the QPO in MAXI J1820+070 for each observation with their corresponding 1-σ uncertainties.
| Observation | Start time | νQPO | FWHM | Q = (ν0/FWHM) |
 |
 |
65-sec segments |
|---|---|---|---|---|---|---|---|
| MJD−58385 | (Hz) | (Hz) | (%) | (%) | |||
| 1200120263 | 0.620 | 9.14 ± 0.29 | 2.1 ± 0.8 | 4.3 ± 1.8 | 2.7 ± 0.5 | 12.2 ± 0.2 | 12 |
| 1200120264_p1 | 1.196 | 9.72 ± 0.25 | 2.8 ± 0.9 | 3.5 ± 1.2 | 2.7 ± 0.4 | 11.8 ± 0.1 | 16 |
| 1200120264_p2 | 1.840 | 7.41 ± 0.14 | 3.0 ± 0.5 | 2.4 ± 0.4 | 6.3 ± 0.5 | 13.7 ± 0.3 | 6 |
| 1200120265 | 2.417 | 6.03 ± 0.08 | 3.1 ± 0.3 | 1.9 ± 0.2 | 8.3 ± 0.4 | 18.3 ± 0.2 | 11 |
| 1200120266_p1 | 3.191 | 5.23 ± 0.05 | 1.2 ± 0.2 | 4.3 ± 0.8 | 4.2 ± 0.7 | 20.0 ± 0.2 | 17 |
| 1200120266_p2 | 3.516 | 3.75 ± 0.03 | 0.5 ± 0.1 | 7.3 ± 1.5 | 3.9 ± 0.8 | 24.4 ± 0.2 | 27 |
| 1200120267 | 4.156 | 2.96 ± 0.06 | 0.9 ± 0.2 | 3.4 ± 1.0 | 3.4 ± 1.1 | 26.5 ± 0.2 | 40 |
| 1200120268 | 4.993 | 2.06 ± 0.03 | 0.3 ± 0.1 | 6.3 ± 2.8 | 2.4 ± 0.8 | 27.4 ± 0.2 | 54 |
| 1200120269 | 6.216 | 1.37 ± 0.04 | 0.2 ± 0.2 | 6.3 ± 4.8 | 2.3 ± 2.0 | 27.0 ± 0.8 | 39 |
| 1200120270 | 7.053 | 1.10 ± 0.01 | 0.1 ± 0.1 | 11.6 ± 5.0 | 3.9 ± 2.0 | 26.0 ± 0.3 | 14 |
| Type B | ∼5 − 6 | ≳6 | |||||
| Type C | ∼0.1 − 15 | ∼7 − 12 | |||||
Notes. (a)The rms amplitude of the QPO in the 2.0 − 12.0 keV band. (b)The broadband (0.1 − 50 Hz) rms amplitude in the 0.3 − 12.0 keV band. For comparison, we also include the properties of typical type B and C QPOs (Casella et al. 2005; Motta 2016), but see Alabarta et al. (2022) and Ma et al. (2023) where they found type-C QPOs with Q factors between 0.2 and 7 in MAXI J1348–630 and MAXI J1820+070, respectively. In the last column, we provide the number of 65-second segments available for the analysis of each observation.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.