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) |
|---|---|---|---|---|
| -0.212 | 0.216 | 0.428 | 0.284-0.039+0.039 | 0.096-0.008+0.008 |
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 - 3 | 2.33-0.11+0.11 | 1.62-0.15+0.15 | -0.40-0.74+0.83 | 24.25-7.44+5.08 | ... | 18.23/18 | |||
| 2BB | 1 - 3 | 2.37-0.11+0.11 | 1.66-0.16+0.16 | ... | 3.58-0.89+1.02 | 54.81-20.97+165.82 | 9.61-0.61+0.72 | 6.14-2.53+8.54 | 15.24/17 | |