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) |
|---|---|---|---|---|
| -0.054 | 0.068 | 0.122 | 0.080-0.025+0.025 | 0.028-0.005+0.005 |
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) | ||||
| OTTB | 1 | 0.68-0.06+0.06 | 1.47-0.20+0.20 | -1.00 | 21.46-3.44+3.92 | ... | 20.66/11 | |||
| 2BB | 1 | 0.72-0.07+0.07 | 1.56-0.22+0.22 | ... | 5.02-0.93+0.60 | 22.21-7.15+18.10 | 13.04-2.09+3.05 | 2.12-0.70+2.63 | 18.76/9 | |