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) |
|---|---|---|---|---|
| -0.460 | 0.248 | 0.708 | 0.422-0.058+0.058 | 0.122-0.006+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 | 6.17-0.14+0.14 | 3.75-0.21+0.21 | -0.67-0.38+0.41 | 21.44-3.84+3.11 | ... | 22.87/19 | |||
| 2BB | 1 - 4 | 6.17-0.15+0.15 | 3.75-0.22+0.21 | ... | 2.43-0.54+0.67 | 408.97-173.38+1425.85 | 8.79-0.26+0.32 | 15.18-6.78+35.22 | 18.99/18 | |