Lasair Transients and Variables*

Gravitational Wave Skymap: S191204r_2

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	677.5 ± 148.6 Mpc
ISO Date:	2019-12-04T17:15:26.090513
Julian date:	2458822.219
Percent probability:	BNS=0, NSBH=0, BBH=100 MassGap=0
max prob RA,Dec	78.5, -35.8

Projection:

json ztfquery

SELECT objectId,jd,ra,decl,fid,magpsf FROM candidates WHERE jd BETWEEN 2458821.219051 and 2458823.219051 AND 
((ra BETWEEN 65.0 and 70.0 AND decl BETWEEN -30.0 AND -25.0)
 OR (ra BETWEEN 65.0 and 70.0 AND decl BETWEEN -35.0 AND -30.0)
 OR (ra BETWEEN 70.0 and 75.0 AND decl BETWEEN -35.0 AND -30.0)
 OR (ra BETWEEN 75.0 and 80.0 AND decl BETWEEN -35.0 AND -30.0)
 OR (ra BETWEEN 80.0 and 85.0 AND decl BETWEEN -35.0 AND -30.0)
 OR (ra BETWEEN 75.0 and 80.0 AND decl BETWEEN -40.0 AND -35.0)
 OR (ra BETWEEN 80.0 and 85.0 AND decl BETWEEN -40.0 AND -35.0)
) ORDER BY objectId

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