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) |
|---|---|---|---|---|
| -0.082 | 0.358 | 0.440 | 0.332-0.016+0.016 | 0.164-0.009+0.009 |
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 - 4 | 3.96-0.11+0.11 | 1.55-0.13+0.13 | -1.18-0.35+0.38 | 20.16-6.36+4.84 | ... | 26.53/21 | |||
| 2BB | 1 - 4 | 4.00-0.11+0.11 | 1.56-0.13+0.13 | ... | 2.95-0.54+0.66 | 169.92-63.84+339.38 | 10.67-0.43+0.50 | 7.39-2.83+8.80 | 22.20/20 | |