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) |
|---|---|---|---|---|
| -0.486 | 1.760 | 2.246 | 1.514-0.064+0.064 | 0.602-0.026+0.026 |
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 | 16.60-0.39+0.39 | 2.11-0.15+0.15 | -0.92-0.30+0.32 | 21.00-3.92+3.23 | ... | 20.08/19 | |||
| 2BB | 1 - 5 | 14.90-0.29+0.29 | 1.90-0.13+0.13 | ... | 4.64-0.41+0.40 | 17.71-2.90+5.24 | 11.00-0.54+0.61 | 2.19-0.26+0.33 | 38.52/26 | |