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:254.459 (J2000)
Dec:35.341 (J2000)
S/N:594.87
Counterpart Name:Her X-1
Other Name:HZ Her
Ctpt RA:254.4576 (J2000)
Ctpt Dec:35.3424 (J2000)
Flux:922.61 (919.90, 925.28) × 10-12 ergs s-1 cm-2, (14-195 keV)
Contamination:0.00
Gamma:3.23 (3.23, 3.24)
Chi2r:5510.70
Redshift:0.00000
Luminosity:--
Class:8: X-ray Binary
Type:LMXB/NS

BAT 58-Month Lightcurves:

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

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

Lightcurves:

BAT 58-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: 19 Mar 2012
Page last modified: 10 Sep 2020