Open Access
Table 1.
Spectral states of Cygnus X-1 during the MAXI observations 2009–2018: data and duration of ten episodes of hard state (hardness ratio h > 0.45) and soft state (h < 0.45).
| No. | Hard state | Soft state | |||||
|---|---|---|---|---|---|---|---|
| Start | End | Dur. | Start | End | Dur. | ||
| (MJD) | (MJD) | (d) | (MJD) | (MJD) | (d) | ||
| 1 | 55057 | 55378 | 321 | 55379 | 55673 | 294 | |
| 2 | 55680 | 55789 | 109 | 55790 | 55886 | 96 | |
| 3 | 55911 | 55941 | 30 | 55942 | 56039 | 97 | |
| 4 | 56040 | 56077 | 37 | 56078 | 56732 | 654 | |
| 5 | 56733 | 56746 | 13 | 56747 | 56757 | 10 | |
| 6 | 56780 | 56839 | 59 | 56854 | 57104 | 250 | |
| 7 | 57105 | 57268 | 163 | 57269 | 57331 | 62 | |
| 8 | 57358 | 57968 | 610 | 57969 | 58111 | 142 | |
| 9 | 58112 | 58201 | 89 | 58205 | 58387 | 182 | |
| 10 | 58388 | 58411 | 23 | 58441 | 58480 | 39 | |
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