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) |
|---|---|---|---|---|
| -0.078 | 0.576 | 0.654 | 0.518-0.014+0.014 | 0.250-0.010+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 | 10.20-0.20+0.20 | 2.66-0.17+0.17 | -0.81-0.28+0.29 | 22.14-3.32+2.84 | ... | 36.97/20 | |||
| 2BB | 1 - 5 | 9.35-0.27+0.27 | 2.44-0.16+0.16 | ... | 3.47-0.38+0.42 | 31.16-8.07+18.46 | 10.78-0.43+0.47 | 2.03-0.49+0.86 | 21.34/27 | |