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) |
|---|---|---|---|---|
| -0.184 | 0.784 | 0.968 | 0.774-0.057+0.057 | 0.386-0.027+0.027 |
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 | 3.66-0.28+0.28 | 1.16-0.15+0.15 | 0.17-1.31+1.57 | 30.43-11.03+5.88 | ... | 27.27/27 | |||
| 2BB | 1 - 5 | 3.39-0.22+0.32 | 1.07-0.13+0.16 | ... | 9.31-0.59+0.62 | 1.66-0.22+0.31 | 0.62-0.31+0.55 | 4102250.66-2050635.79+10706267055.01 | 19.88/26 | |