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) |
|---|---|---|---|---|
| -0.206 | 1.632 | 1.838 | 1.450-0.032+0.032 | 0.758-0.033+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 - 5 | 14.90-0.30+0.30 | 1.84-0.13+0.13 | -1.09-0.31+0.33 | 16.66-4.06+3.29 | ... | 43.74/27 | |||
| 2BB | 1 - 5 | 14.90-0.30+0.30 | 1.84-0.13+0.13 | ... | 2.26-0.32+0.36 | 184.47-66.61+311.26 | 8.52-0.20+0.22 | 4.76-1.79+5.39 | 28.51/26 | |