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) |
|---|---|---|---|---|
| -0.146 | 3.408 | 3.554 | 2.444-0.041+0.041 | 1.346-0.033+0.033 |
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 - 6 | 38.30-0.41+0.41 | 2.49-0.15+0.15 | -1.14-0.12+0.12 | 20.29-1.77+1.62 | ... | 67.20/27 | |||
| 2BB | 1 - 6 | 38.30-0.41+0.41 | 2.48-0.15+0.15 | ... | 4.66-0.30+0.30 | 23.34-3.07+4.69 | 11.55-0.28+0.30 | 3.18-0.33+0.35 | 70.12/26 | |