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) |
|---|---|---|---|---|
| -0.438 | 0.720 | 1.158 | 0.822-0.035+0.035 | 0.412-0.013+0.013 |
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 | 8.91-0.27+0.27 | 1.36-0.12+0.12 | -0.71-0.50+0.55 | 22.93-5.46+3.93 | ... | 35.37/27 | |||
| 2BB | 1 - 5 | 8.87-0.26+0.26 | 1.36-0.12+0.12 | ... | 7.08-0.58+0.49 | 5.13-0.57+0.90 | 15.81-2.72+3.99 | 0.47-0.16+0.41 | 31.28/26 | |