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) |
|---|---|---|---|---|
| -0.046 | 1.104 | 1.150 | 0.876-0.025+0.025 | 0.274-0.009+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 | 16.30-0.33+0.33 | 4.87-0.21+0.21 | -1.43-0.18+0.19 | 19.09-4.47+3.72 | ... | 31.20/27 | |||
| 2BB | 1 - 5 | 16.10-0.32+0.32 | 4.83-0.21+0.21 | ... | 5.01-0.55+0.58 | 13.95-2.78+5.55 | 13.31-0.58+0.70 | 1.68-0.27+0.31 | 39.95/26 | |