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) |
|---|---|---|---|---|
| -0.090 | 1.520 | 1.610 | 1.270-0.032+0.032 | 0.670-0.017+0.017 |
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 | 15.70-0.30+0.30 | 1.84-0.13+0.13 | -1.28-0.23+0.24 | 15.38-3.79+3.17 | ... | 61.22/27 | |||
| 2BB | 1 - 5 | 16.00-0.29+0.29 | 1.87-0.13+0.13 | ... | 2.97-0.25+0.27 | 69.01-16.05+32.82 | 9.57-0.23+0.24 | 3.67-0.81+1.31 | 31.29/26 | |