The Neil Gehrels Swift Observatory

General Information:

Swift Name:SWIFT J1554.9-3757
RA:238.6785 (J2000)
Dec:-37.5988 (J2000)
S/N:7.64
Counterpart Name:IGR J15549-3740
Ctpt RA:238.6948 (J2000)
Ctpt Dec:-37.6387 (J2000)
Flux:15.50 (12.31, 18.93) × 10-12 ergs s-1 cm-2, (14-195 keV)
Gamma:1.89 (1.58, 2.23)
Chi2r:1.26
Redshift:0.0192
Luminosity:43.12 log[ergs s-1] (14-195 keV)
AS:1
Class:5
Type:Sy2

BAT 157-Month Lightcurve:

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1554.9-3757

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1554.9-3757

Lightcurve:

BAT 157-Month Spectrum:

BAT Spectrum for SWIFT J1554.9-3757

BAT Spectrum for SWIFT J1554.9-3757

Data last modified: 15 Sep 2025
Page last modified: 03 Jun 2025