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) |
|---|---|---|---|---|
| -0.030 | 0.880 | 0.910 | 0.222-0.008+0.008 | 0.106-0.004+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 | 9.01-0.19+0.19 | 6.07-0.27+0.27 | -0.99-0.28+0.29 | 18.94-3.66+3.08 | ... | 34.74/20 | |||
| 2BB | 1 - 4 | 9.09-0.19+0.19 | 6.12-0.27+0.27 | ... | 2.99-0.46+0.51 | 262.01-85.75+333.09 | 9.55-0.30+0.33 | 15.50-5.24+11.73 | 26.12/19 | |