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) |
|---|---|---|---|---|
| -0.160 | 0.704 | 0.864 | 0.550-0.028+0.028 | 0.266-0.009+0.009 |
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 | 11.30-0.21+0.21 | 4.05-0.21+0.21 | -1.08-0.29+0.30 | 19.16-4.19+3.43 | ... | 29.91/21 | |||
| 2BB | 1 - 5 | 10.60-0.29+0.29 | 3.80-0.21+0.21 | ... | 6.07-0.72+0.64 | 8.27-1.30+2.60 | 13.55-1.90+2.91 | 0.93-0.27+0.41 | 35.55/26 | |