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) |
|---|---|---|---|---|
| -0.416 | 1.504 | 1.920 | 1.218-0.074+0.074 | 0.520-0.027+0.027 |
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 - 5 | 9.03-0.27+0.27 | 1.32-0.11+0.11 | -0.93-0.33+0.35 | 24.22-4.68+3.67 | ... | 25.45/27 | |||
| 2BB | 1 - 5 | 9.12-0.27+0.27 | 1.34-0.12+0.12 | ... | 3.79-0.63+0.76 | 20.54-6.62+23.55 | 11.09-0.48+0.59 | 1.96-0.63+1.29 | 21.56/26 | |