SGR burst detected by KW on 2004-12-27
at T0 = 9231.427 s UT (02:33:51.427)

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)
-0.150 2.128 2.278 0.530-0.016+0.016 0.276-0.007+0.007

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 - 5 16.70-0.34+0.34 7.07-0.28+0.28 ... 3.30-0.24+0.27 53.87-10.88+19.15 11.40-0.35+0.38 2.40-0.43+0.62 61.04/27