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) |
|---|---|---|---|---|
| -0.236 | 1.568 | 1.804 | 1.342-0.032+0.032 | 0.704-0.026+0.026 |
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 | 14.60-0.29+0.29 | 1.72-0.12+0.12 | -1.39-0.22+0.23 | 16.35-4.47+3.67 | ... | 52.22/26 | |||
| 2BB | 1 - 5 | 14.60-0.29+0.29 | 1.72-0.12+0.12 | ... | 3.29-0.42+0.54 | 43.68-13.48+37.21 | 10.50-0.34+0.43 | 2.86-0.82+1.69 | 56.31/25 | |