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) |
|---|---|---|---|---|
| -0.022 | 1.568 | 1.590 | 1.078-0.032+0.032 | 0.522-0.016+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 - 6 | 44.10-0.47+0.47 | 5.96-0.23+0.23 | -1.26-0.12+0.12 | 18.09-1.99+1.82 | ... | 73.81/27 | |||
| 2BB | 1 - 6 | 44.10-0.48+0.48 | 5.97-0.23+0.23 | ... | 3.69-0.24+0.26 | 52.30-8.67+13.86 | 10.79-0.20+0.21 | 4.59-0.67+0.86 | 74.58/26 | |