SGR burst detected by KW on 2004-12-26
at T0 = 3507.981 s UT (00:58:27.981)

Lightcurve
Lightcurve

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)
-0.032 0.816 0.848 0.382-0.186+0.186 0.054-0.004+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)
2BB 1 - 2 2.83-0.11+0.11 3.32-0.23+0.23 ... 5.53-0.86+0.81 37.93-8.26+16.65 12.80-2.16+4.12 3.50-1.24+2.15 15.78/17