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) |
|---|---|---|---|---|
| -0.134 | 3.392 | 3.526 | 2.856-0.128+0.128 | 1.442-0.073+0.073 |
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 | 10.80-0.33+0.33 | 1.74-0.14+0.14 | -1.24-0.37+0.39 | 16.92-6.61+5.03 | ... | 20.80/20 | |||
| 2BB | 1 - 5 | 11.00-0.27+0.27 | 1.78-0.14+0.14 | ... | 3.32-0.29+0.31 | 42.83-9.54+19.13 | 10.69-0.40+0.42 | 2.17-0.44+0.67 | 26.21/26 | |