Lasair Transients and Variables*

Gravitational Wave Skymap: S200224ca

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	1475.8 ± 308.5 Mpc
ISO Date:	2020-02-24T22:22:34.402337
Julian date:	2458904.432
Percent probability:	BNS=0, NSBH=0, BBH=99 MassGap=0
max prob RA,Dec	174.9, -10.0

Projection:

json ztfquery

SELECT objectId,jd,ra,decl,fid,magpsf FROM candidates WHERE jd BETWEEN 2458903.432338 and 2458905.432338 AND 
((ra BETWEEN 170.0 and 175.0 AND decl BETWEEN -5.0 AND 0.0)
 OR (ra BETWEEN 170.0 and 175.0 AND decl BETWEEN -10.0 AND -5.0)
 OR (ra BETWEEN 175.0 and 180.0 AND decl BETWEEN -10.0 AND -5.0)
 OR (ra BETWEEN 170.0 and 175.0 AND decl BETWEEN -15.0 AND -10.0)
 OR (ra BETWEEN 175.0 and 180.0 AND decl BETWEEN -15.0 AND -10.0)
) ORDER BY objectId

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