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) |
|---|---|---|---|---|
| -0.162 | 0.150 | 0.312 | 0.188-0.030+0.030 | 0.092-0.008+0.008 |
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 - 2 | 1.79-0.08+0.08 | 1.36-0.14+0.14 | -0.36-0.78+0.87 | 23.01-7.22+4.87 | ... | 13.03/18 | |||
| 2BB | 1 - 2 | 1.80-0.08+0.08 | 1.37-0.14+0.14 | ... | 3.00-0.85+1.29 | 116.03-51.42+710.00 | 8.77-0.53+0.70 | 9.81-4.44+29.23 | 11.11/17 | |