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) |
|---|---|---|---|---|
| -0.262 | 3.680 | 3.942 | 3.034-0.128+0.128 | 1.382-0.049+0.049 |
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 | 16.70-0.51+0.51 | 1.38-0.13+0.13 | -1.16-0.40+0.44 | 20.06-7.03+5.09 | ... | 23.50/22 | |||
| 2BB | 1 - 5 | 16.50-0.31+0.32 | 1.36-0.12+0.12 | ... | 4.61-0.63+0.61 | 18.40-4.01+10.55 | 11.21-0.73+0.91 | 2.27-0.38+0.39 | 38.64/25 | |