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) |
|---|---|---|---|---|
| -0.016 | 0.166 | 0.182 | 0.150-0.004+0.004 | 0.078-0.004+0.004 |
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 | 6.24-0.15+0.15 | 4.70-0.22+0.23 | -0.29-0.30+0.32 | 31.00-2.64+2.28 | ... | 18.48/21 | |||
| 2BB | 1 - 3 | 6.34-0.16+0.16 | 4.78-0.23+0.23 | ... | 3.11-0.70+0.90 | 197.96-80.00+669.48 | 10.95-0.37+0.44 | 11.80-5.01+20.16 | 11.71/20 | |