SGR burst detected by KW on 1999-01-25
at T0 = 30836.811 s UT (08:33:56.811)

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)
-0.012 0.050 0.062 0.040-0.008+0.008 0.020-0.003+0.003

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 1.19-0.06+0.06 3.46-0.25+0.25 ... 8.11-0.48+0.67 16.10-2.31+3.79 23.95-7.36+16.21 0.69-0.30+1.60 12.85/16