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) |
|---|---|---|---|---|
| -0.044 | 0.038 | 0.082 | 0.068-0.004+0.004 | 0.026-0.004+0.004 |
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 | 1.37-0.06+0.06 | 3.22-0.23+0.23 | -0.94-0.70+0.78 | 24.16-12.54+7.30 | ... | 19.57/17 | |||
| 2BB | 1 | 1.38-0.07+0.06 | 3.24-0.24+0.23 | ... | 2.35-0.68+0.77 | 478.12-214.04+6604.62 | 10.59-0.56+0.62 | 8.99-4.30+32.75 | 13.79/16 | |