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) |
|---|---|---|---|---|
| -0.226 | 0.260 | 0.486 | 0.398-0.014+0.014 | 0.214-0.010+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) | ||||
| CPL | 1 - 4 | 4.87-0.14+0.14 | 1.59-0.14+0.14 | -0.73-0.43+0.47 | 23.47-5.17+3.99 | ... | 26.30/20 | |||
| 2BB | 1 - 4 | 4.95-0.14+0.14 | 1.62-0.14+0.14 | ... | 3.19-0.63+0.76 | 108.52-40.27+230.77 | 10.07-0.44+0.51 | 7.48-2.90+8.56 | 21.17/19 | |