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) |
|---|---|---|---|---|
| -0.076 | 0.752 | 0.828 | 0.708-0.016+0.016 | 0.440-0.017+0.017 |
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 - 4 | 6.77-0.17+0.17 | 1.55-0.13+0.13 | -0.64-0.43+0.47 | 19.78-4.20+3.39 | ... | 35.26/24 | |||
| 2BB | 1 - 5 | 6.23-0.26+0.26 | 1.43-0.13+0.13 | ... | 2.65-0.43+0.60 | 60.01-23.14+98.23 | 8.52-0.40+0.48 | 3.03-1.11+4.11 | 33.47/32 | |