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) |
|---|---|---|---|---|
| -0.220 | 0.992 | 1.212 | 0.542-0.020+0.020 | 0.264-0.011+0.011 |
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 | 7.17-0.18+0.18 | 1.76-0.14+0.14 | -1.09-0.35+0.37 | 18.35-5.10+4.03 | ... | 12.65/20 | |||
| 2BB | 1 - 5 | 6.74-0.27+0.27 | 1.66-0.14+0.15 | ... | 5.08-1.11+1.11 | 8.15-2.31+9.82 | 11.91-1.50+2.29 | 1.07-0.22+0.42 | 17.29/26 | |