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) |
|---|---|---|---|---|
| -0.034 | 0.298 | 0.332 | 0.244-0.012+0.012 | 0.116-0.004+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 - 4 | 8.09-0.17+0.17 | 4.80-0.23+0.23 | -0.85-0.27+0.28 | 22.05-3.29+2.80 | ... | 26.10/20 | |||
| 2BB | 1 - 4 | 8.18-0.17+0.17 | 4.86-0.23+0.23 | ... | 3.45-0.44+0.48 | 149.56-41.11+112.65 | 10.23-0.31+0.33 | 12.52-3.46+6.12 | 15.85/19 | |