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) |
|---|---|---|---|---|
| -0.296 | 1.120 | 1.416 | 0.912-0.032+0.032 | 0.426-0.016+0.016 |
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 | 23.80-0.37+0.37 | 4.32-0.18+0.18 | -0.72-0.17+0.18 | 29.20-1.94+1.74 | ... | 55.77/25 | |||
| 2BB | 1 - 5 | 24.10-0.38+0.38 | 4.38-0.19+0.19 | ... | 3.61-0.42+0.48 | 39.09-10.47+25.93 | 11.68-0.27+0.30 | 3.09-0.81+1.45 | 44.40/24 | |