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) |
|---|---|---|---|---|
| -0.090 | 0.170 | 0.260 | 0.186-0.010+0.010 | 0.094-0.005+0.005 |
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 | 4.04-0.11+0.11 | 2.57-0.18+0.18 | -0.54-0.42+0.45 | 24.14-4.26+3.41 | ... | 28.42/19 | |||
| 2BB | 1 - 3 | 4.14-0.11+0.11 | 2.63-0.18+0.18 | ... | 2.82-0.47+0.53 | 227.70-81.05+398.76 | 9.71-0.33+0.35 | 10.91-4.10+11.62 | 15.92/18 | |