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) |
|---|---|---|---|---|
| -0.040 | 1.072 | 1.112 | 0.900-0.032+0.032 | 0.418-0.011+0.011 |
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 | 22.00-0.34+0.34 | 5.71-0.25+0.25 | -1.17-0.22+0.23 | 18.27-3.54+3.04 | ... | 56.48/21 | |||
| 2BB | 1 - 5 | 20.50-0.34+0.34 | 5.33-0.22+0.22 | ... | 2.73-0.21+0.22 | 114.67-26.03+53.33 | 9.83-0.21+0.23 | 3.92-0.86+1.36 | 37.55/26 | |