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) |
|---|---|---|---|---|
| -0.216 | 0.768 | 0.984 | 0.650-0.041+0.041 | 0.310-0.010+0.010 |
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 - 5 | 8.26-0.27+0.28 | 1.71-0.14+0.14 | -1.10-0.41+0.44 | 20.50-6.78+4.98 | ... | 38.87/27 | |||
| 2BB | 1 - 5 | 8.57-0.28+0.28 | 1.78-0.14+0.14 | ... | 2.59-0.44+0.49 | 80.74-30.27+177.11 | 10.31-0.40+0.44 | 2.12-0.83+2.66 | 23.36/26 | |