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) |
|---|---|---|---|---|
| -0.282 | 1.888 | 2.170 | 1.682-0.082+0.082 | 0.820-0.034+0.034 |
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 | 9.72-0.34+0.34 | 1.03-0.11+0.11 | -0.55-0.47+0.51 | 24.71-5.00+3.87 | ... | 30.24/19 | |||
| 2BB | 1 - 5 | 9.98-0.27+0.27 | 1.06-0.11+0.11 | ... | 2.92-0.33+0.36 | 59.23-16.86+47.19 | 10.09-0.40+0.43 | 2.29-0.64+1.22 | 38.30/26 | |