SGR burst detected by KW on 2004-12-16
at T0 = 79655.178 s UT (22:07:35.178)

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)
-0.090 0.426 0.516 0.402-0.042+0.042 0.172-0.010+0.010

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 - 4 3.98-0.11+0.11 1.39-0.13+0.13 -0.91-0.39+0.42 22.90-5.42+4.12 ... 31.63/20
2BB 1 - 4 3.98-0.11+0.11 1.39-0.13+0.13 ... 3.74-0.92+1.44 68.28-27.66+121.24 10.56-0.60+1.02 7.12-2.84+8.42 32.35/19