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 | 3.408 | 3.644 | 2.574-0.136+0.136 | 1.062-0.041+0.041 |
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 | 15.70-0.28+0.28 | 1.70-0.13+0.13 | -0.84-0.23+0.24 | 22.45-2.70+2.33 | ... | 53.03/26 | |||
| 2BB | 1 - 5 | 16.00-0.29+0.29 | 1.73-0.13+0.13 | ... | 3.07-0.32+0.36 | 55.93-14.86+36.13 | 10.00-0.24+0.26 | 3.35-0.88+1.59 | 29.92/25 | |