Source properties
Name: SGR 1806-20
Coordinates[J2000]: (272.1639, -20.4111)
Proposed associations: W31, MC 13A, massive star cluster
Distance: 8.7 kpc
P, Ṗ: ∼ 7.55 s, ∼ 49.5 × 10-11 s s-1
B surf: ∼ 20.0 × 1014 G
Characteristic age: ∼ 0.2 kyr
Temporal analysis
| Ti (s) | Tf (s) | T100 (s) | T90 (s) | T50 (s) |
|---|---|---|---|---|
| -0.088 | 0.360 | 0.448 | 0.388-0.016+0.016 | 0.198-0.018+0.018 |
Spectral analysis
| Model | Spectra | Fluence | Peak flux | α | Ep | kT1 | R1 | kT2 | R2 | χ2/dof |
|---|---|---|---|---|---|---|---|---|---|---|
| (10-6 erg/cm2) | (10-5 erg/cm2/s) | (keV) | (keV) | (km) | (keV) | (km) | ||||
| CPL | 1 - 3 | 2.07-0.14+0.14 | 1.83-0.19+0.19 | -0.85-0.79+0.93 | 28.42-14.82+8.20 | ... | 18.37/19 | |||
| 2BB | 1 - 3 | 2.10-0.14+0.14 | 1.86-0.19+0.19 | ... | 4.29-0.99+1.32 | 24.87-9.40+49.20 | 12.38-1.03+1.31 | 2.70-1.02+3.63 | 16.68/18 | |