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) |
|---|---|---|---|---|
| -0.120 | 0.512 | 0.632 | 0.288-0.026+0.026 | 0.124-0.009+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 - 4 | 4.35-0.12+0.12 | 2.61-0.17+0.17 | -0.08-0.38+0.40 | 27.05-2.74+2.34 | ... | 40.54/24 | |||
| 2BB | 1 - 4 | 4.35-0.13+0.13 | 2.62-0.17+0.17 | ... | 2.21-0.35+0.46 | 543.24-215.65+1045.51 | 9.27-0.25+0.26 | 12.27-4.76+20.99 | 21.50/23 | |