Table 2
Summary of illuminating source candidates for the fluorescence signal of the CND and their typical luminosity, duration, and energy released.
| Source | Luminosity [erg s−1] | Duration | Energy [erg] |
|---|---|---|---|
| Sgr A⋆ (flares) | 1034 ÷ 1036 | ~few103 s | 5 × 1040 |
| SGR J1745-2900 | ~1035 | ≳1 yr | 5.2 × 1042 |
| J174540.7-290015 | ≳1036 | ≳4 months | 2.4 × 1043 |
| J174540.2-290037 | ~1036 | ≳1 month | 5 × 1042 |
Notes. For Sgr A⋆ the average duration of the flare is a few thousand seconds. The energy is extrapolated for a year of flaring activity, assuming the fluence reported by Ponti et al. (2015).
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