SGR burst detected by KW on 2004-12-25
at T0 = 23963.883 s UT (06:39:23.883)

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)
-0.042 1.040 1.082 0.828-0.344+0.344 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 4.59-0.14+0.14 5.48-0.28+0.28 ... 4.49-0.82+1.03 76.79-24.27+85.15 12.64-0.96+1.40 6.99-1.93+2.82 33.00/20