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) |
|---|---|---|---|---|
| -0.062 | 1.296 | 1.358 | 1.086-0.032+0.032 | 0.544-0.016+0.016 |
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 | 20.30-0.32+0.32 | 2.55-0.14+0.14 | -1.20-0.17+0.17 | 20.29-2.78+2.44 | ... | 29.91/27 | |||
| 2BB | 1 - 5 | 20.30-0.31+0.31 | 2.55-0.14+0.14 | ... | 4.73-0.39+0.41 | 18.06-2.94+4.93 | 11.90-0.38+0.43 | 2.40-0.31+0.37 | 30.69/26 | |