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) |
|---|---|---|---|---|
| -0.152 | 0.128 | 0.280 | 0.210-0.011+0.011 | 0.106-0.032+0.032 |
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 - 2 | 1.76-0.11+0.11 | 1.88-0.20+0.20 | -0.48-0.85+0.98 | 29.64-10.77+6.50 | ... | 6.66/17 | |||
| 2BB | 1 - 2 | 1.79-0.11+0.11 | 1.92-0.20+0.20 | ... | 3.59-1.28+1.97 | 48.45-22.01+645.31 | 11.23-0.95+1.30 | 4.10-1.95+14.60 | 5.29/16 | |