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 | 0.688 | 0.822 | 0.640-0.025+0.025 | 0.338-0.009+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 - 5 | 10.60-0.28+0.28 | 1.96-0.14+0.14 | -0.77-0.39+0.41 | 20.80-4.25+3.35 | ... | 39.18/27 | |||
| 2BB | 1 - 5 | 10.90-0.27+0.27 | 2.00-0.14+0.14 | ... | 2.74-0.40+0.46 | 67.10-22.89+89.20 | 9.09-0.29+0.33 | 3.31-1.15+3.00 | 26.12/26 | |