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) |
|---|---|---|---|---|
| -1.961 | 0.458 | 2.419 | 2.165-1.035+1.035 | 0.488-0.068+0.068 |
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) | ||||
| OTTB | 1 - 4 | 5.85-0.15+0.15 | 3.06-0.19+0.19 | -1.00 | 19.80-0.70+0.72 | ... | 35.79/22 | |||
| 2BB | 1 - 4 | 5.84-0.16+0.16 | 3.06-0.19+0.19 | ... | 2.63-0.56+0.74 | 266.61-111.12+986.26 | 9.36-0.35+0.45 | 10.96-4.72+21.44 | 37.31/20 | |