SGR burst detected by KW on 2004-07-28
at T0 = 544.709 s UT (00:09:04.709)

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)
-0.164 0.160 0.324 0.252-0.015+0.015 0.114-0.009+0.009

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 - 3 4.33-0.20+0.21 2.65-0.22+0.22 ... 5.87-3.14+0.70 22.67-4.56+208.89 15.28-6.80+6.57 1.32-0.52+2.93 17.84/19