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) |
|---|---|---|---|---|
| -0.142 | 0.422 | 0.564 | 0.378-0.017+0.017 | 0.186-0.007+0.007 |
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 - 5 | 7.57-0.28+0.29 | 2.73-0.18+0.18 | -1.26-0.41+0.45 | 20.66-8.75+5.89 | ... | 30.20/27 | |||
| 2BB | 1 - 5 | 7.42-0.26+0.26 | 2.68-0.17+0.17 | ... | 7.68-1.20+0.87 | 4.11-0.68+1.60 | 18.91-4.69+9.28 | 0.35-0.14+0.43 | 29.82/26 | |