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) |
|---|---|---|---|---|
| -0.084 | 0.248 | 0.332 | 0.224-0.011+0.011 | 0.118-0.006+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 - 4 | 3.74-0.11+0.11 | 2.39-0.17+0.17 | -1.15-0.42+0.45 | 17.88-6.84+5.05 | ... | 21.51/20 | |||
| 2BB | 1 - 4 | 3.74-0.11+0.11 | 2.39-0.17+0.17 | ... | 2.69-0.47+0.57 | 230.75-87.15+452.09 | 9.50-0.35+0.41 | 9.64-3.69+12.17 | 17.35/19 | |