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) |
|---|---|---|---|---|
| -0.126 | 2.384 | 2.510 | 1.928-0.057+0.057 | 1.014-0.033+0.033 |
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 | 17.40-0.45+0.46 | 1.94-0.14+0.15 | -1.16-0.34+0.35 | 19.32-5.68+4.38 | ... | 27.17/20 | |||
| 2BB | 1 - 5 | 16.50-0.30+0.30 | 1.84-0.13+0.13 | ... | 3.63-0.29+0.31 | 35.81-7.20+13.07 | 11.30-0.30+0.33 | 2.49-0.45+0.65 | 38.12/25 | |