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) |
|---|---|---|---|---|
| -0.072 | 0.528 | 0.600 | 0.434-0.012+0.012 | 0.232-0.006+0.006 |
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 | 13.70-0.31+0.31 | 3.77-0.19+0.19 | -1.34-0.25+0.26 | 16.71-4.78+3.87 | ... | 24.13/27 | |||
| 2BB | 1 - 5 | 13.80-0.31+0.31 | 3.79-0.19+0.19 | ... | 3.85-0.40+0.44 | 26.70-6.21+13.22 | 10.97-0.39+0.43 | 2.42-0.51+0.77 | 17.15/26 | |