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) |
|---|---|---|---|---|
| -0.248 | 0.456 | 0.704 | 0.284-0.012+0.012 | 0.112-0.004+0.004 |
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 | 10.30-0.27+0.27 | 6.50-0.28+0.28 | -0.48-0.34+0.36 | 28.49-3.16+2.60 | ... | 50.25/27 | |||
| 2BB | 1 - 5 | 10.40-0.28+0.28 | 6.53-0.29+0.29 | ... | 2.56-0.54+0.71 | 82.92-34.98+311.49 | 10.19-0.30+0.35 | 2.85-1.24+6.61 | 46.12/26 | |