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) |
|---|---|---|---|---|
| -0.060 | 0.624 | 0.684 | 0.526-0.026+0.026 | 0.238-0.007+0.007 |
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 | 10.60-0.28+0.28 | 2.63-0.15+0.15 | -0.85-0.34+0.36 | 22.50-4.04+3.25 | ... | 46.97/31 | |||
| 2BB | 1 - 5 | 10.60-0.29+0.29 | 2.64-0.15+0.15 | ... | 2.49-0.37+0.45 | 100.26-36.40+157.40 | 9.58-0.28+0.31 | 3.18-1.16+3.63 | 34.79/30 | |