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) |
|---|---|---|---|---|
| -0.158 | 0.560 | 0.718 | 0.566-0.020+0.020 | 0.240-0.010+0.010 |
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 | 10.20-0.20+0.20 | 2.52-0.16+0.16 | -0.53-0.29+0.31 | 23.90-2.72+2.35 | ... | 18.60/20 | |||
| 2BB | 1 - 5 | 9.74-0.27+0.28 | 2.41-0.16+0.16 | ... | 5.83-0.75+0.64 | 7.89-1.32+3.03 | 12.63-1.36+1.66 | 1.10-0.22+0.34 | 29.59/26 | |