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) |
|---|---|---|---|---|
| -0.116 | 1.184 | 1.300 | 0.964-0.032+0.032 | 0.562-0.017+0.017 |
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 | 13.30-0.33+0.33 | 1.78-0.14+0.14 | -1.12-0.33+0.35 | 19.18-5.24+4.16 | ... | 26.80/21 | |||
| 2BB | 1 - 5 | 11.80-0.28+0.28 | 1.58-0.12+0.12 | ... | 3.80-0.60+0.79 | 25.07-8.01+24.73 | 10.53-0.53+0.74 | 2.40-0.69+1.21 | 42.76/26 | |