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Gravitational Wave Skymap: GW170817

The probability contours of the location of the gravitational-wave counterpart are shown below; the sky background can be changed with the selector, and the interface allows arbitary zooming. The 9 contour lines show percentiles of the probability density: the outermost line contains 90% and the innermost contains 10%. The three checkboxes below are as follows:
  • Coverage: shows if the ZTF survey has covered the skymap in the date range specified. Note that ZTF did not start until 20180527.
  • Candidates: Shows the ZTF candidates surrounding the skymap and in a time window around the event time. The form fields are in days, as differences from the event time.
  • Galaxies: Shows galaxies that may have the counterpart, with the size of the symbol as the 3D probability density at that galaxy position and distance.
Remember to click "submit" to refresh the page.
Distance38.0 ± 7.5 Mpc
ISO Date:2017-08-17T12:41:04.429464
Julian date:2457983.029
Percent probability: BNS=0.0, NSBH=0.0, BBH=0.0
max prob RA,Dec196.3, -21.3
Coverage of ZTF From To
Show ZTF candidates From To
Show galaxies from GLADEdoubleclick a galaxy

json   ztfquery