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) |
|---|---|---|---|---|
| -0.132 | 8.720 | 8.852 | 6.654-0.163+0.163 | 3.700-0.121+0.121 |
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 - 5 | 28.10-0.32+0.32 | 1.90-0.13+0.13 | -1.22-0.14+0.14 | 18.38-2.19+1.97 | ... | 80.34/26 | |||
| 2BB | 1 - 5 | 28.20-0.32+0.32 | 1.91-0.14+0.14 | ... | 3.82-0.29+0.31 | 38.25-6.94+12.28 | 10.74-0.24+0.26 | 3.66-0.59+0.76 | 70.99/25 | |