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) |
|---|---|---|---|---|
| -0.402 | 0.366 | 0.768 | 0.348-0.032+0.032 | 0.162-0.012+0.012 |
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 | 3.33-0.11+0.11 | 1.33-0.12+0.12 | -0.64-0.47+0.51 | 24.55-5.03+3.77 | ... | 24.97/21 | |||
| 2BB | 1 - 4 | 3.31-0.11+0.11 | 1.32-0.12+0.12 | ... | 6.84-1.07+0.85 | 16.95-2.77+6.39 | 13.71-2.28+4.03 | 2.42-0.91+1.89 | 23.79/20 | |