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) |
|---|---|---|---|---|
| -0.122 | 0.324 | 0.446 | 0.364-0.014+0.014 | 0.208-0.010+0.010 |
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) | ||||
| 2BB | 1 - 4 | 4.31-0.12+0.12 | 1.42-0.13+0.13 | ... | 5.50-0.83+0.81 | 28.40-6.12+15.79 | 12.56-1.09+1.40 | 4.02-0.64+1.04 | 18.19/20 | |