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) |
|---|---|---|---|---|
| -0.052 | 0.688 | 0.740 | 0.520-0.027+0.027 | 0.238-0.009+0.009 |
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 | 9.32-0.29+0.29 | 3.71-0.20+0.20 | -1.08-0.39+0.41 | 18.59-5.62+4.24 | ... | 26.77/27 | |||
| 2BB | 1 - 5 | 9.28-0.28+0.28 | 3.69-0.20+0.20 | ... | 3.71-1.12+1.81 | 21.25-8.80+137.08 | 9.68-0.66+1.58 | 2.56-1.12+2.76 | 29.26/26 | |