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) |
|---|---|---|---|---|
| -0.082 | 0.316 | 0.398 | 0.250-0.011+0.011 | 0.104-0.004+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 | 7.94-0.17+0.17 | 5.18-0.24+0.24 | -1.40-0.24+0.25 | 18.64-5.67+4.49 | ... | 36.68/22 | |||
| 2BB | 1 - 4 | 8.08-0.17+0.17 | 5.27-0.25+0.25 | ... | 3.79-0.31+0.33 | 119.59-23.93+42.57 | 12.40-0.35+0.37 | 7.86-1.46+2.18 | 15.10/21 | |