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) |
|---|---|---|---|---|
| -0.030 | 0.132 | 0.162 | 0.098-0.004+0.004 | 0.044-0.003+0.003 |
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 - 2 | 5.66-0.16+0.16 | 7.34-0.32+0.32 | -0.84-0.28+0.30 | 30.90-4.37+3.59 | ... | 51.35/21 | |||
| 2BB | 1 - 2 | 5.87-0.16+0.16 | 7.62-0.33+0.33 | ... | 3.50-0.43+0.52 | 176.97-51.94+132.98 | 13.31-0.45+0.47 | 8.59-2.42+5.19 | 34.85/20 | |