The Neil Gehrels Swift Observatory

General Information:

Optical image for SWIFT J1657.7+3518

Optical Image
(3 arcmin on a side, red = DSS 2 IR,
green = DSS 2 red, blue = DSS 2 blue

Swift Name:SWIFT J1657.7+3518
RA:254.484 (J2000)
Dec:35.332 (J2000)
S/N:669.64
Counterpart Name:Her X-1
Other Name:HZ Her
Ctpt RA:254.4576 (J2000)
Ctpt Dec:35.3424 (J2000)
Flux:992.08 (989.57, 994.58) × 10-12 ergs s-1 cm-2, (14-195 keV)
Contamination: 
Gamma:3.26 (3.25, 3.26)
Chi2r:6136.00
Redshift: 
Luminosity: 
AS: 
Class:14
Type:LMXB/NS

BAT 70-Month Lightcurves:

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1657.7+3518

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1657.7+3518

Lightcurves:

BAT 70-Month Spectrum:

BAT Spectrum for SWIFT J1657.7+3518

BAT Spectrum for SWIFT J1657.7+3518

BAT Hard X-ray Transient Source Page:

Data last modified: 23 May 2013
Page last modified: 10 Sep 2020