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) |
|---|---|---|---|---|
| -0.388 | 3.232 | 3.620 | 2.886-0.073+0.073 | 1.446-0.050+0.050 |
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 | 19.60-0.64+0.64 | 1.42-0.13+0.13 | -1.19-0.41+0.44 | 17.31-6.92+5.16 | ... | 27.60/20 | |||
| 2BB | 1 - 5 | 18.90-0.29+0.29 | 1.38-0.12+0.12 | ... | 3.13-0.27+0.29 | 61.57-13.96+28.39 | 9.99-0.26+0.28 | 3.38-0.71+1.10 | 43.96/25 | |