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) |
|---|---|---|---|---|
| -0.086 | 0.832 | 0.918 | 0.304-0.116+0.116 | 0.056-0.004+0.004 |
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 - 3 | 6.16-0.16+0.16 | 6.32-0.29+0.29 | -1.28-0.32+0.34 | 18.44-6.21+4.79 | ... | 21.63/21 | |||
| 2BB | 1 - 3 | 6.06-0.16+0.16 | 6.21-0.28+0.28 | ... | 6.60-1.12+0.77 | 31.32-5.12+10.31 | 14.16-1.89+2.17 | 4.36-1.03+1.50 | 27.08/20 | |