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) |
|---|---|---|---|---|
| -0.094 | 0.048 | 0.142 | 0.068-0.007+0.007 | 0.030-0.003+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 | 1.72-0.08+0.08 | 2.95-0.22+0.23 | -0.28-0.78+0.89 | 27.10-7.29+4.79 | ... | 5.73/14 | |||
| 2BB | 1 | 1.71-0.08+0.08 | 2.94-0.22+0.22 | ... | 6.53-3.35+1.79 | 21.31-5.41+243.68 | 11.80-2.46+11.08 | 4.89-2.38+7.19 | 5.94/13 | |