Lasair Transients and Variables*

Gravitational Wave Skymap: S190814bv_4

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.

Distance	267.4 ± 51.6 Mpc
ISO Date:	2019-08-14T21:10:38.995869
Julian date:	2458710.382
Percent probability:	BNS=0, NSBH=99, BBH=0 MassGap=0
max prob RA,Dec	12.8, -25.2

Projection:

json ztfquery

SELECT objectId,jd,ra,decl,fid,magpsf FROM candidates WHERE jd BETWEEN 2458709.382384 and 2458711.382384 AND 
((ra BETWEEN 10.0 and 15.0 AND decl BETWEEN -25.0 AND -20.0)
 OR (ra BETWEEN 10.0 and 15.0 AND decl BETWEEN -30.0 AND -25.0)
) ORDER BY objectId

Coverage of ZTF	From	To
Show ZTF candidates	From	To
Show galaxies from GLADE	doubleclick a galaxy