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) |
|---|---|---|---|---|
| -0.506 | 8.064 | 8.570 | 3.848-0.374+0.374 | 0.864-0.023+0.023 |
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 - 7 | 50.10-0.46+0.46 | 5.00-0.21+0.21 | -1.28-0.10+0.10 | 19.84-1.78+1.64 | ... | 112.19/27 | |||
| 2BB | 1 - 7 | 50.20-0.46+0.46 | 5.00-0.21+0.21 | ... | 4.02-0.21+0.23 | 40.59-5.35+7.66 | 11.71-0.19+0.20 | 3.81-0.43+0.51 | 116.23/26 | |