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) |
|---|---|---|---|---|
| -0.410 | 0.304 | 0.714 | 0.582-0.025+0.025 | 0.272-0.018+0.018 |
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 | 3.54-0.13+0.13 | 0.91-0.10+0.10 | -1.11-0.44+0.48 | 21.17-8.00+5.76 | ... | 35.97/20 | |||
| 2BB | 1 - 4 | 3.61-0.13+0.13 | 0.93-0.11+0.11 | ... | 3.56-0.70+0.85 | 68.43-24.58+122.96 | 11.24-0.66+0.79 | 4.75-1.73+4.41 | 31.46/19 | |