SGR burst detected by KW on 2004-12-25
at T0 = 56202.514 s UT (15:36:42.514)

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)
-0.088 0.360 0.448 0.388-0.016+0.016 0.198-0.018+0.018

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 2.07-0.14+0.14 1.83-0.19+0.19 -0.85-0.79+0.93 28.42-14.82+8.20 ... 18.37/19
2BB 1 - 3 2.10-0.14+0.14 1.86-0.19+0.19 ... 4.29-0.99+1.32 24.87-9.40+49.20 12.38-1.03+1.31 2.70-1.02+3.63 16.68/18